PTSD

Two forms of short-term exposure therapy may help reduce symptoms of posttraumatic stress disorder, new research suggests.

In a randomized clinical trial comparing an abbreviated form of prolonged exposure (PE) therapy against an intensive outpatient program (IOP) form of PE, military veterans with combat-related PTSD in both groups experienced significant improvements in PTSD symptoms.

In addition, remission rates of around 50% were sustained in both groups up to the 6-month mark.

“With about two-thirds of study participants reporting clinically meaningful symptom improvement and more than half losing their PTSD diagnosis, this study provides important new evidence that combat-related PTSD can be effectively treated – in as little as 3 weeks,” lead investigator Alan Peterson, PhD, told this news organization.

Dr. Peterson, professor of psychiatry and behavioral sciences at the University of Texas Health Science Center, San Antonio, and director of the Consortium to Alleviate PTSD, noted that while condensed treatments may not be feasible for everyone, “results show that compressed formats adapted to the military context resulted in significant, meaningful, and lasting improvements in PTSD, disability, and functional impairments for most participants.”

The findings were published online in JAMA Network Open.
 

Breathing, direct exposure, education

The investigators randomly recruited 234 military personnel and veterans from two military treatment facilities and two Veterans Affairs facilities in south and central Texas.

Participants (78% men; mean age, 39 years) were active-duty service members or veterans who had deployed post Sept. 11 and met diagnostic criteria for PTSD. They could receive psychotropic medications at stable doses and were excluded if they had mania, substance abuse, psychosis, or suicidality.

The sample included 44% White participants, 26% Black participants, and 25% Hispanic participants.

The researchers randomly assigned the participants to receive either massed-PE (n = 117) or IOP-PE (n = 117).

PE, the foundation of both protocols, includes psychoeducation about trauma, diaphragmatic breathing, direct and imaginal exposure, and processing of the trauma.

The massed-PE protocol was delivered in 15 daily 90-minute sessions over 3 consecutive weeks, as was the IOP-PE. However, the IOP-PE also included eight additional multiple daily feedback sessions, homework, social support from friends or family, and three booster sessions post treatment.

The investigators conducted baseline assessments and follow-up assessments at 1 month, 3 months, and 6 months. At the 6-month follow-up, there were 57 participants left to analyze in the massed-PE group and 57 in the IOP-PE group.
 

Significantly decreased symptoms

As measured by the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5), PTSD symptoms decreased significantly from baseline to the 1-month follow-up in both groups (massed-PE mean change, –14.13; P < .001; IOP-PE mean change, –13.85; P < .001).

Both groups also failed to meet PTSD diagnostic criteria at 1-, 3-, and 6-month follow-ups.

At the 1-month follow-up, 62% of participants who received massed-PE and 48% of those who received IOP-PE no longer met diagnostic criteria on the CAPS-5. Diagnostic remission was maintained in more than half of the massed-PE group (52%) and the IOP-PE group (53%) at the 6-month follow-up.

Disability scores as measured by the Sheehan Disability Scale also decreased significantly in both groups (P < .001) from baseline to the 1-month follow-up mark; as did psychosocial functioning scores, as reflected by the Brief Inventory of Psychosocial Functioning (P < .001).

Dr. Peterson noted that the condensed treatment format could be an essential option to consider even in other countries, such as Ukraine, where there are concerns about PTSD in military personnel.

Study limitations included the lack of a placebo or inactive comparison group, and the lack of generalizability of the results to the entire population of U.S. service members and veterans outside of Texas.

Dr. Peterson said he plans to continue his research and that the compressed treatment formats studied “are well-suited for the evaluation of alternative modes of therapy combining cognitive-behavioral treatments with medications and medical devices.”
 

Generalizability limited?

Commenting on the research, Joshua Morganstein, MD, chair of the American Psychiatric Association’s committee on the psychiatric dimensions of disaster, said he was reassured to see participants achieve and keep improvements throughout the study.

“One of the biggest challenges we have, particularly with trauma and stress disorders, is keeping people in therapy” because of the difficult nature of the exposure therapy, said Dr. Morganstein, who was not involved with the research.

“The number of people assigned to each group and who ultimately completed the last follow-up gives a good idea of the utility of the intervention,” he added.

However, Dr. Morganstein noted that some of the exclusion criteria, particularly suicidality and substance abuse, affected the study’s relevance to real-world populations.

“The people in the study become less representative of those who are actually in clinical care,” he said, noting that these two conditions are often comorbid with PTSD.

The study was funded by the Department of Defense, the Defense Health Program, the Psychological Health and Traumatic Brain Injury Research Program, the Department of Veterans Affairs, the Office of Research and Development, and the Clinical Science Research & Development Service. The investigators and Dr. Morganstein have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Two forms of short-term exposure therapy may help reduce symptoms of posttraumatic stress disorder, new research suggests.

In a randomized clinical trial comparing an abbreviated form of prolonged exposure (PE) therapy against an intensive outpatient program (IOP) form of PE, military veterans with combat-related PTSD in both groups experienced significant improvements in PTSD symptoms.

In addition, remission rates of around 50% were sustained in both groups up to the 6-month mark.

“With about two-thirds of study participants reporting clinically meaningful symptom improvement and more than half losing their PTSD diagnosis, this study provides important new evidence that combat-related PTSD can be effectively treated – in as little as 3 weeks,” lead investigator Alan Peterson, PhD, told this news organization.

Dr. Peterson, professor of psychiatry and behavioral sciences at the University of Texas Health Science Center, San Antonio, and director of the Consortium to Alleviate PTSD, noted that while condensed treatments may not be feasible for everyone, “results show that compressed formats adapted to the military context resulted in significant, meaningful, and lasting improvements in PTSD, disability, and functional impairments for most participants.”

The findings were published online in JAMA Network Open.
 

Breathing, direct exposure, education

The investigators randomly recruited 234 military personnel and veterans from two military treatment facilities and two Veterans Affairs facilities in south and central Texas.

Participants (78% men; mean age, 39 years) were active-duty service members or veterans who had deployed post Sept. 11 and met diagnostic criteria for PTSD. They could receive psychotropic medications at stable doses and were excluded if they had mania, substance abuse, psychosis, or suicidality.

The sample included 44% White participants, 26% Black participants, and 25% Hispanic participants.

The researchers randomly assigned the participants to receive either massed-PE (n = 117) or IOP-PE (n = 117).

PE, the foundation of both protocols, includes psychoeducation about trauma, diaphragmatic breathing, direct and imaginal exposure, and processing of the trauma.

The massed-PE protocol was delivered in 15 daily 90-minute sessions over 3 consecutive weeks, as was the IOP-PE. However, the IOP-PE also included eight additional multiple daily feedback sessions, homework, social support from friends or family, and three booster sessions post treatment.

The investigators conducted baseline assessments and follow-up assessments at 1 month, 3 months, and 6 months. At the 6-month follow-up, there were 57 participants left to analyze in the massed-PE group and 57 in the IOP-PE group.
 

Significantly decreased symptoms

As measured by the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5), PTSD symptoms decreased significantly from baseline to the 1-month follow-up in both groups (massed-PE mean change, –14.13; P < .001; IOP-PE mean change, –13.85; P < .001).

Both groups also failed to meet PTSD diagnostic criteria at 1-, 3-, and 6-month follow-ups.

At the 1-month follow-up, 62% of participants who received massed-PE and 48% of those who received IOP-PE no longer met diagnostic criteria on the CAPS-5. Diagnostic remission was maintained in more than half of the massed-PE group (52%) and the IOP-PE group (53%) at the 6-month follow-up.

Disability scores as measured by the Sheehan Disability Scale also decreased significantly in both groups (P < .001) from baseline to the 1-month follow-up mark; as did psychosocial functioning scores, as reflected by the Brief Inventory of Psychosocial Functioning (P < .001).

Dr. Peterson noted that the condensed treatment format could be an essential option to consider even in other countries, such as Ukraine, where there are concerns about PTSD in military personnel.

Study limitations included the lack of a placebo or inactive comparison group, and the lack of generalizability of the results to the entire population of U.S. service members and veterans outside of Texas.

Dr. Peterson said he plans to continue his research and that the compressed treatment formats studied “are well-suited for the evaluation of alternative modes of therapy combining cognitive-behavioral treatments with medications and medical devices.”
 

Generalizability limited?

Commenting on the research, Joshua Morganstein, MD, chair of the American Psychiatric Association’s committee on the psychiatric dimensions of disaster, said he was reassured to see participants achieve and keep improvements throughout the study.

“One of the biggest challenges we have, particularly with trauma and stress disorders, is keeping people in therapy” because of the difficult nature of the exposure therapy, said Dr. Morganstein, who was not involved with the research.

“The number of people assigned to each group and who ultimately completed the last follow-up gives a good idea of the utility of the intervention,” he added.

However, Dr. Morganstein noted that some of the exclusion criteria, particularly suicidality and substance abuse, affected the study’s relevance to real-world populations.

“The people in the study become less representative of those who are actually in clinical care,” he said, noting that these two conditions are often comorbid with PTSD.

The study was funded by the Department of Defense, the Defense Health Program, the Psychological Health and Traumatic Brain Injury Research Program, the Department of Veterans Affairs, the Office of Research and Development, and the Clinical Science Research & Development Service. The investigators and Dr. Morganstein have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Two forms of short-term exposure therapy may help reduce symptoms of posttraumatic stress disorder, new research suggests.

In a randomized clinical trial comparing an abbreviated form of prolonged exposure (PE) therapy against an intensive outpatient program (IOP) form of PE, military veterans with combat-related PTSD in both groups experienced significant improvements in PTSD symptoms.

In addition, remission rates of around 50% were sustained in both groups up to the 6-month mark.

“With about two-thirds of study participants reporting clinically meaningful symptom improvement and more than half losing their PTSD diagnosis, this study provides important new evidence that combat-related PTSD can be effectively treated – in as little as 3 weeks,” lead investigator Alan Peterson, PhD, told this news organization.

Dr. Peterson, professor of psychiatry and behavioral sciences at the University of Texas Health Science Center, San Antonio, and director of the Consortium to Alleviate PTSD, noted that while condensed treatments may not be feasible for everyone, “results show that compressed formats adapted to the military context resulted in significant, meaningful, and lasting improvements in PTSD, disability, and functional impairments for most participants.”

The findings were published online in JAMA Network Open.
 

Breathing, direct exposure, education

The investigators randomly recruited 234 military personnel and veterans from two military treatment facilities and two Veterans Affairs facilities in south and central Texas.

Participants (78% men; mean age, 39 years) were active-duty service members or veterans who had deployed post Sept. 11 and met diagnostic criteria for PTSD. They could receive psychotropic medications at stable doses and were excluded if they had mania, substance abuse, psychosis, or suicidality.

The sample included 44% White participants, 26% Black participants, and 25% Hispanic participants.

The researchers randomly assigned the participants to receive either massed-PE (n = 117) or IOP-PE (n = 117).

PE, the foundation of both protocols, includes psychoeducation about trauma, diaphragmatic breathing, direct and imaginal exposure, and processing of the trauma.

The massed-PE protocol was delivered in 15 daily 90-minute sessions over 3 consecutive weeks, as was the IOP-PE. However, the IOP-PE also included eight additional multiple daily feedback sessions, homework, social support from friends or family, and three booster sessions post treatment.

The investigators conducted baseline assessments and follow-up assessments at 1 month, 3 months, and 6 months. At the 6-month follow-up, there were 57 participants left to analyze in the massed-PE group and 57 in the IOP-PE group.
 

Significantly decreased symptoms

As measured by the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5), PTSD symptoms decreased significantly from baseline to the 1-month follow-up in both groups (massed-PE mean change, –14.13; P < .001; IOP-PE mean change, –13.85; P < .001).

Both groups also failed to meet PTSD diagnostic criteria at 1-, 3-, and 6-month follow-ups.

At the 1-month follow-up, 62% of participants who received massed-PE and 48% of those who received IOP-PE no longer met diagnostic criteria on the CAPS-5. Diagnostic remission was maintained in more than half of the massed-PE group (52%) and the IOP-PE group (53%) at the 6-month follow-up.

Disability scores as measured by the Sheehan Disability Scale also decreased significantly in both groups (P < .001) from baseline to the 1-month follow-up mark; as did psychosocial functioning scores, as reflected by the Brief Inventory of Psychosocial Functioning (P < .001).

Dr. Peterson noted that the condensed treatment format could be an essential option to consider even in other countries, such as Ukraine, where there are concerns about PTSD in military personnel.

Study limitations included the lack of a placebo or inactive comparison group, and the lack of generalizability of the results to the entire population of U.S. service members and veterans outside of Texas.

Dr. Peterson said he plans to continue his research and that the compressed treatment formats studied “are well-suited for the evaluation of alternative modes of therapy combining cognitive-behavioral treatments with medications and medical devices.”
 

Generalizability limited?

Commenting on the research, Joshua Morganstein, MD, chair of the American Psychiatric Association’s committee on the psychiatric dimensions of disaster, said he was reassured to see participants achieve and keep improvements throughout the study.

“One of the biggest challenges we have, particularly with trauma and stress disorders, is keeping people in therapy” because of the difficult nature of the exposure therapy, said Dr. Morganstein, who was not involved with the research.

“The number of people assigned to each group and who ultimately completed the last follow-up gives a good idea of the utility of the intervention,” he added.

However, Dr. Morganstein noted that some of the exclusion criteria, particularly suicidality and substance abuse, affected the study’s relevance to real-world populations.

“The people in the study become less representative of those who are actually in clinical care,” he said, noting that these two conditions are often comorbid with PTSD.

The study was funded by the Department of Defense, the Defense Health Program, the Psychological Health and Traumatic Brain Injury Research Program, the Department of Veterans Affairs, the Office of Research and Development, and the Clinical Science Research & Development Service. The investigators and Dr. Morganstein have reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Higher levels of anxiety sensitivity were associated with more severe depression in adults with dissociative identity disorder, based on data from 21 individuals.

Anxiety sensitivity refers to fear of the signs and symptoms of anxiety based on the individual’s belief that the signs of anxiety will have harmful consequences, wrote Xi Pan, LICSW, MPA, of McLean Hospital, Belmont, Mass., and colleagues.

Anxiety sensitivity can include cognitive, physical, and social elements: for example, fear that the inability to focus signals mental illness, fear that a racing heart might cause a heart attack, or fear that exhibiting anxiety signs in public (e.g., sweaty palms) will cause embarrassment, the researchers said.

Previous studies have found associations between anxiety sensitivity and panic attacks, and anxiety sensitivity has been shown to contribute to worsening symptoms in patients with anxiety disorders, depressive disorders, and trauma-related disorders such as posttraumatic stress disorder. However, “anxiety sensitivity has not been studied in individuals with complex dissociative disorders such as dissociative identity disorder (DID)” – who often have co-occurring PTSD and depression, the researchers said.

In a study published in the Journal of Psychiatric Research, the authors analyzed data from 21 treatment-seeking adult women with histories of childhood trauma, current PTSD, and dissociative identity disorder. Participants completed the Anxiety Sensitivity Index (ASI), Beck Depression Inventory-II, Childhood Trauma Questionnaire, Multidimensional Inventory of Dissociation, and PTSD Checklist for DSM-5.

Anxiety sensitivity in cognitive, physical, and social domains was assessed using ASI subscales.

Pearson correlations showed that symptoms of depression were significantly associated with anxiety sensitivity total scores and across all anxiety subscales. However, no direct associations appeared between anxiety sensitivity and PTSD or severe dissociative symptoms.

In a multiple regression analysis, the ASI cognitive subscale was a positive predictor of depressive symptoms, although physical and social subscale scores were not.

The researchers also tested for an indirect relationship between anxiety sensitivity and dissociative symptoms through depression. “Specifically, more severe ASI cognitive concerns were associated with more depressive symptoms, and more depressive symptoms predicted more severe pathological dissociation symptoms,” they wrote.

The findings were limited by the inability to show a direct causal relationship between anxiety sensitivity and depression, the researchers noted. Other limitations included the small sample size, use of self-reports, and the population of mainly White women, which may not generalize to other populations, they said.

However, the results represent the first empirical investigation of the relationship between anxiety sensitivity and DID symptoms, and support the value of assessment for anxiety sensitivity in DID patients in clinical practice, they said.

“If high levels of anxiety sensitivity are identified, the individual may benefit from targeted interventions, which in turn may alleviate some symptoms of depression and dissociation in DID,” the researchers concluded.

The study was supported by the National Institute of Mental Health and the Julia Kasparian Fund for Neuroscience Research. The researchers had no financial conflicts to disclose.
 

Higher levels of anxiety sensitivity were associated with more severe depression in adults with dissociative identity disorder, based on data from 21 individuals.

Anxiety sensitivity refers to fear of the signs and symptoms of anxiety based on the individual’s belief that the signs of anxiety will have harmful consequences, wrote Xi Pan, LICSW, MPA, of McLean Hospital, Belmont, Mass., and colleagues.

Anxiety sensitivity can include cognitive, physical, and social elements: for example, fear that the inability to focus signals mental illness, fear that a racing heart might cause a heart attack, or fear that exhibiting anxiety signs in public (e.g., sweaty palms) will cause embarrassment, the researchers said.

Previous studies have found associations between anxiety sensitivity and panic attacks, and anxiety sensitivity has been shown to contribute to worsening symptoms in patients with anxiety disorders, depressive disorders, and trauma-related disorders such as posttraumatic stress disorder. However, “anxiety sensitivity has not been studied in individuals with complex dissociative disorders such as dissociative identity disorder (DID)” – who often have co-occurring PTSD and depression, the researchers said.

In a study published in the Journal of Psychiatric Research, the authors analyzed data from 21 treatment-seeking adult women with histories of childhood trauma, current PTSD, and dissociative identity disorder. Participants completed the Anxiety Sensitivity Index (ASI), Beck Depression Inventory-II, Childhood Trauma Questionnaire, Multidimensional Inventory of Dissociation, and PTSD Checklist for DSM-5.

Anxiety sensitivity in cognitive, physical, and social domains was assessed using ASI subscales.

Pearson correlations showed that symptoms of depression were significantly associated with anxiety sensitivity total scores and across all anxiety subscales. However, no direct associations appeared between anxiety sensitivity and PTSD or severe dissociative symptoms.

In a multiple regression analysis, the ASI cognitive subscale was a positive predictor of depressive symptoms, although physical and social subscale scores were not.

The researchers also tested for an indirect relationship between anxiety sensitivity and dissociative symptoms through depression. “Specifically, more severe ASI cognitive concerns were associated with more depressive symptoms, and more depressive symptoms predicted more severe pathological dissociation symptoms,” they wrote.

The findings were limited by the inability to show a direct causal relationship between anxiety sensitivity and depression, the researchers noted. Other limitations included the small sample size, use of self-reports, and the population of mainly White women, which may not generalize to other populations, they said.

However, the results represent the first empirical investigation of the relationship between anxiety sensitivity and DID symptoms, and support the value of assessment for anxiety sensitivity in DID patients in clinical practice, they said.

“If high levels of anxiety sensitivity are identified, the individual may benefit from targeted interventions, which in turn may alleviate some symptoms of depression and dissociation in DID,” the researchers concluded.

The study was supported by the National Institute of Mental Health and the Julia Kasparian Fund for Neuroscience Research. The researchers had no financial conflicts to disclose.
 

Higher levels of anxiety sensitivity were associated with more severe depression in adults with dissociative identity disorder, based on data from 21 individuals.

Anxiety sensitivity refers to fear of the signs and symptoms of anxiety based on the individual’s belief that the signs of anxiety will have harmful consequences, wrote Xi Pan, LICSW, MPA, of McLean Hospital, Belmont, Mass., and colleagues.

Anxiety sensitivity can include cognitive, physical, and social elements: for example, fear that the inability to focus signals mental illness, fear that a racing heart might cause a heart attack, or fear that exhibiting anxiety signs in public (e.g., sweaty palms) will cause embarrassment, the researchers said.

Previous studies have found associations between anxiety sensitivity and panic attacks, and anxiety sensitivity has been shown to contribute to worsening symptoms in patients with anxiety disorders, depressive disorders, and trauma-related disorders such as posttraumatic stress disorder. However, “anxiety sensitivity has not been studied in individuals with complex dissociative disorders such as dissociative identity disorder (DID)” – who often have co-occurring PTSD and depression, the researchers said.

In a study published in the Journal of Psychiatric Research, the authors analyzed data from 21 treatment-seeking adult women with histories of childhood trauma, current PTSD, and dissociative identity disorder. Participants completed the Anxiety Sensitivity Index (ASI), Beck Depression Inventory-II, Childhood Trauma Questionnaire, Multidimensional Inventory of Dissociation, and PTSD Checklist for DSM-5.

Anxiety sensitivity in cognitive, physical, and social domains was assessed using ASI subscales.

Pearson correlations showed that symptoms of depression were significantly associated with anxiety sensitivity total scores and across all anxiety subscales. However, no direct associations appeared between anxiety sensitivity and PTSD or severe dissociative symptoms.

In a multiple regression analysis, the ASI cognitive subscale was a positive predictor of depressive symptoms, although physical and social subscale scores were not.

The researchers also tested for an indirect relationship between anxiety sensitivity and dissociative symptoms through depression. “Specifically, more severe ASI cognitive concerns were associated with more depressive symptoms, and more depressive symptoms predicted more severe pathological dissociation symptoms,” they wrote.

The findings were limited by the inability to show a direct causal relationship between anxiety sensitivity and depression, the researchers noted. Other limitations included the small sample size, use of self-reports, and the population of mainly White women, which may not generalize to other populations, they said.

However, the results represent the first empirical investigation of the relationship between anxiety sensitivity and DID symptoms, and support the value of assessment for anxiety sensitivity in DID patients in clinical practice, they said.

“If high levels of anxiety sensitivity are identified, the individual may benefit from targeted interventions, which in turn may alleviate some symptoms of depression and dissociation in DID,” the researchers concluded.

The study was supported by the National Institute of Mental Health and the Julia Kasparian Fund for Neuroscience Research. The researchers had no financial conflicts to disclose.
 

A new study provides strong supportive evidence that adding 3,4-methylenedioxymethamphetamine (MDMA) to psychotherapy can significantly improve symptoms and well-being for patients with severe posttraumatic stress disorder.

The MAPP2 study is the second randomized, double-blind, placebo-controlled study to demonstrate the safety and efficacy of MDMA-assisted therapy for PTSD.

The investigators confirm results of the MAPP1 study, which were published in Nature Medicine. Patients who received MDMA-assisted psychotherapy in MAPP1 demonstrated greater improvement in PTSD symptoms, mood, and empathy, compared with participants who received psychotherapy with placebo.

The design of the MAPP2 study was similar to that of MAPP1, and its results were similar, the nonprofit Multidisciplinary Association for Psychedelic Studies (MAPS), which sponsored MAPP1 and MAPP2, said in a news release.

No specific results from MAPP2 were provided at this time. The full data from MAPP2 are expected to be published in a peer-reviewed journal later this year, and a new drug application to the U.S. Food and Drug Administration will follow.

The FDA granted breakthrough therapy designation to MDMA as an adjunct to psychotherapy for adults with PTSD in 2017.

MAPS was founded in 1986 to fund and facilitate research into the potential of psychedelic-assisted therapies; to educate the public about psychedelics for medical, social, and spiritual use; and to advocate for drug policy reform.

“When I first articulated a plan to legitimize a psychedelic-assisted therapy through FDA approval, many people said it was impossible,” Rick Doblin, PhD, founder and executive director of MAPS, said in the news release.

“Thirty-seven years later, we are on the precipice of bringing a novel therapy to the millions of Americans living with PTSD who haven’t found relief through current treatments,” said Dr. Doblin.

“The impossible became possible through the bravery of clinical trial participants, the compassion of mental health practitioners, and the generosity of thousands of donors. Today, we can imagine that MDMA-assisted therapy for PTSD may soon be available and accessible to all who could benefit,” Dr. Doblin added.

According to MAPS, phase 2 trials are being planned or conducted regarding the efficacy of MDMA-assisted therapies for substance use disorder and eating disorders, as well as couples therapy and group therapy among veterans.

Currently, no psychedelic-assisted therapy has been approved by the FDA or other regulatory authorities.

A version of this article first appeared on Medscape.com.

A new study provides strong supportive evidence that adding 3,4-methylenedioxymethamphetamine (MDMA) to psychotherapy can significantly improve symptoms and well-being for patients with severe posttraumatic stress disorder.

The MAPP2 study is the second randomized, double-blind, placebo-controlled study to demonstrate the safety and efficacy of MDMA-assisted therapy for PTSD.

The investigators confirm results of the MAPP1 study, which were published in Nature Medicine. Patients who received MDMA-assisted psychotherapy in MAPP1 demonstrated greater improvement in PTSD symptoms, mood, and empathy, compared with participants who received psychotherapy with placebo.

The design of the MAPP2 study was similar to that of MAPP1, and its results were similar, the nonprofit Multidisciplinary Association for Psychedelic Studies (MAPS), which sponsored MAPP1 and MAPP2, said in a news release.

No specific results from MAPP2 were provided at this time. The full data from MAPP2 are expected to be published in a peer-reviewed journal later this year, and a new drug application to the U.S. Food and Drug Administration will follow.

The FDA granted breakthrough therapy designation to MDMA as an adjunct to psychotherapy for adults with PTSD in 2017.

MAPS was founded in 1986 to fund and facilitate research into the potential of psychedelic-assisted therapies; to educate the public about psychedelics for medical, social, and spiritual use; and to advocate for drug policy reform.

“When I first articulated a plan to legitimize a psychedelic-assisted therapy through FDA approval, many people said it was impossible,” Rick Doblin, PhD, founder and executive director of MAPS, said in the news release.

“Thirty-seven years later, we are on the precipice of bringing a novel therapy to the millions of Americans living with PTSD who haven’t found relief through current treatments,” said Dr. Doblin.

“The impossible became possible through the bravery of clinical trial participants, the compassion of mental health practitioners, and the generosity of thousands of donors. Today, we can imagine that MDMA-assisted therapy for PTSD may soon be available and accessible to all who could benefit,” Dr. Doblin added.

According to MAPS, phase 2 trials are being planned or conducted regarding the efficacy of MDMA-assisted therapies for substance use disorder and eating disorders, as well as couples therapy and group therapy among veterans.

Currently, no psychedelic-assisted therapy has been approved by the FDA or other regulatory authorities.

A version of this article first appeared on Medscape.com.

A new study provides strong supportive evidence that adding 3,4-methylenedioxymethamphetamine (MDMA) to psychotherapy can significantly improve symptoms and well-being for patients with severe posttraumatic stress disorder.

The MAPP2 study is the second randomized, double-blind, placebo-controlled study to demonstrate the safety and efficacy of MDMA-assisted therapy for PTSD.

The investigators confirm results of the MAPP1 study, which were published in Nature Medicine. Patients who received MDMA-assisted psychotherapy in MAPP1 demonstrated greater improvement in PTSD symptoms, mood, and empathy, compared with participants who received psychotherapy with placebo.

The design of the MAPP2 study was similar to that of MAPP1, and its results were similar, the nonprofit Multidisciplinary Association for Psychedelic Studies (MAPS), which sponsored MAPP1 and MAPP2, said in a news release.

No specific results from MAPP2 were provided at this time. The full data from MAPP2 are expected to be published in a peer-reviewed journal later this year, and a new drug application to the U.S. Food and Drug Administration will follow.

The FDA granted breakthrough therapy designation to MDMA as an adjunct to psychotherapy for adults with PTSD in 2017.

MAPS was founded in 1986 to fund and facilitate research into the potential of psychedelic-assisted therapies; to educate the public about psychedelics for medical, social, and spiritual use; and to advocate for drug policy reform.

“When I first articulated a plan to legitimize a psychedelic-assisted therapy through FDA approval, many people said it was impossible,” Rick Doblin, PhD, founder and executive director of MAPS, said in the news release.

“Thirty-seven years later, we are on the precipice of bringing a novel therapy to the millions of Americans living with PTSD who haven’t found relief through current treatments,” said Dr. Doblin.

“The impossible became possible through the bravery of clinical trial participants, the compassion of mental health practitioners, and the generosity of thousands of donors. Today, we can imagine that MDMA-assisted therapy for PTSD may soon be available and accessible to all who could benefit,” Dr. Doblin added.

According to MAPS, phase 2 trials are being planned or conducted regarding the efficacy of MDMA-assisted therapies for substance use disorder and eating disorders, as well as couples therapy and group therapy among veterans.

Currently, no psychedelic-assisted therapy has been approved by the FDA or other regulatory authorities.

A version of this article first appeared on Medscape.com.

A genome-wide association study (GWAS) of suicidal thoughts and behaviors (SITB) has identified significant cross-ancestry risk loci. The findings provide further evidence of a genetic basis for SITB.

“It’s really important for us to continue to study the genetic risk factors for suicidal behaviors so we can really understand the biology and develop better treatments,” study investigator Allison E. Ashley-Koch, PhD, professor in the department of medicine at Duke University Medical Center, Durham, N.C., told this news organization.

The findings were published online in JAMA Psychiatry).
 

SITB heritability

Suicide is a leading cause of death, particularly among individuals aged 15-29 years. Whereas the global rate of suicide has decreased by 36% in the past 20 years, the rate in the United States has increased by 35%, with the greatest rise in military veterans.

Twin studies suggest heritability for SITB is between 30% and 55%, but the molecular genetic basis of SITB remains elusive.

To address this research gap, investigators conducted a study of 633,778 U.S. military veterans from the Million Veteran Program (MVP) cohort. Of these, 71% had European ancestry, 19% had African ancestry, 8% were Hispanic, and 1% were Asian. Just under 10% of the sample was female.

Study participants donated a blood sample and agreed to have their genetic information linked with their electronic health record data.

From diagnostic codes and other sources, researchers identified 121,211 individuals with SITB. They classified participants with no documented lifetime history of suicidal ideation, suicide attempt, or suicide death as controls.

Rates of SITB differed significantly by ancestry – 25% in those with African or Hispanic ancestry, 21% in those with Asian ancestry, and 16.8% in those with European ancestry. Rates also differed by age and sex; those with SITB were younger and more likely to be female.

In addition to age and sex, covariates included “genetic principal components,” which Dr. Ashley-Koch said accounts for combining data of individuals with different ethnic/racial backgrounds.

Through meta-analysis, the investigators identified seven genome-wide, significant cross-ancestry risk loci.

To evaluate whether the findings could be replicated, researchers used the International Suicide Genetics Consortium (ISGC), a primarily civilian international consortium of roughly 550,000 individuals of mostly European ancestry.

The analysis showed the top replicated cross-ancestry risk locus was rs6557168, an intronic single-nucleotide variant (SNV) in the ESR1 gene that encodes an estrogen receptor. Previous work identified ESR1 as a causal genetic driver gene for development of posttraumatic stress disorder and depression, both of which are risk factors for SITB among veterans.

The second-strongest replicated cross-ancestry locus was rs12808482, an intronic variant in the DRD2 gene, which encodes the D₂ dopamine-receptor subtype. The authors noted DRD2 is highly expressed in brain tissue and has been associated with numerous psychiatric phenotypes.

Research suggests DRD2 is associated with other risk factors for SITB, such as schizophrenia, mood disorders, and attention-deficit/hyperactivity disorder, but DRD2 could also contribute to suicide risk directly. The authors noted it is highly expressed in the prefrontal cortex, nucleus accumbens, substantia nigra, and hippocampus.
 

Outstanding candidate gene

The study revealed a cross-ancestry GWS association for rs10671545, a variant in DCC, which is “also an outstanding candidate gene,” the investigators write.

They note it is expressed in brain tissue, is involved in synaptic plasticity, axon guidance, and circadian entrainment, and has been associated with multiple psychiatric phenotypes.

Researchers also found what they called “intriguing” cross-ancestry GWS associations for the TRAF3 gene, which regulates type-1 interferon production. Many patients receiving interferon therapy develop major depressive disorder and suicidal ideation.

TRAF3 is also associated with antisocial behavior, substance use, and ADHD. Lithium – a standard treatment for bipolar disorder that reduces suicide risk – modulates the expression of TRAF3.

Dr. Ashley-Koch noted the replication of these loci (ESR1, DRD2, TRAF3, and DCC) was in a population of mostly White civilians. “This suggests to us that at least some of the risk for suicidal thoughts and behaviors does cross ancestry and also crosses military and civilian populations.”

It was “exciting” that all four genes the study focused on had previously been implicated in other psychiatric disorders, said Dr. Ashley-Koch. “What gave us a little more confidence, above and beyond the replication, was that these genes are somehow important for psychiatric disorders, and not any psychiatric disorders, but the ones that are also associated with a high risk of suicide behavior, such as depression, PTSD, schizophrenia, and ADHD.”

The findings will not have an immediate impact on clinical practice, said Dr. Ashley-Koch.

“We need to take the next step, which is to try to understand how these genetic factors may impact risk and what else is happening biologically to increase that risk. Then once we do that, hopefully we can develop some new treatments,” she added.
 

‘Valuable and noble’ research

Commenting on the study, Elspeth Cameron Ritchie, MD, chief of psychiatry at Medstar Washington Hospital Center, Washington, said this kind of genetic research is “valuable and noble.”

Researchers have long been interested in risk factors for suicide among military personnel and veterans, said Dr. Ritchie. Evidence to date suggests being a young male is a risk factor as is feeling excluded or not fitting into the unit, and drug or alcohol addiction.

Dr. Ritchie noted other psychiatric disorders, including schizophrenia, depression, and bipolar disorder, are at least partially inherited.

She noted the study’s findings should not be used to discriminate against those who might have the identified genetic loci without clearer evidence of their impact.

“If we were able to identify these genes, would we start screening everybody who joins the military to see if they have these genes, and how would that impact the ability to recruit or retain personnel?”

She agreed additional work is needed to determine if and how carrying these genes might impact clinical care.

In addition, she pointed out that behavior is influenced not only by genetic load but also by environment. “This study may show the impact of the genetic load a little bit more clearly; right now, we tend to look at environmental factors.”

The study was supported by an award from the Clinical Science Research and Development (CSR&D) service of the Veterans Health Administration’s Office of Research and Development. The work was also supported in part by the joint U.S. Department of Veterans Affairs and U.S. Department of Energy MVP CHAMPION program.

Dr. Ashley-Koch reported grants from Veterans Administration during the conduct of the study. Several other coauthors report relationships with industry, nonprofit organizations, and government agencies. The full list can be found with the original article. Dr. Ritchie reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A genome-wide association study (GWAS) of suicidal thoughts and behaviors (SITB) has identified significant cross-ancestry risk loci. The findings provide further evidence of a genetic basis for SITB.

“It’s really important for us to continue to study the genetic risk factors for suicidal behaviors so we can really understand the biology and develop better treatments,” study investigator Allison E. Ashley-Koch, PhD, professor in the department of medicine at Duke University Medical Center, Durham, N.C., told this news organization.

The findings were published online in JAMA Psychiatry).
 

SITB heritability

Suicide is a leading cause of death, particularly among individuals aged 15-29 years. Whereas the global rate of suicide has decreased by 36% in the past 20 years, the rate in the United States has increased by 35%, with the greatest rise in military veterans.

Twin studies suggest heritability for SITB is between 30% and 55%, but the molecular genetic basis of SITB remains elusive.

To address this research gap, investigators conducted a study of 633,778 U.S. military veterans from the Million Veteran Program (MVP) cohort. Of these, 71% had European ancestry, 19% had African ancestry, 8% were Hispanic, and 1% were Asian. Just under 10% of the sample was female.

Study participants donated a blood sample and agreed to have their genetic information linked with their electronic health record data.

From diagnostic codes and other sources, researchers identified 121,211 individuals with SITB. They classified participants with no documented lifetime history of suicidal ideation, suicide attempt, or suicide death as controls.

Rates of SITB differed significantly by ancestry – 25% in those with African or Hispanic ancestry, 21% in those with Asian ancestry, and 16.8% in those with European ancestry. Rates also differed by age and sex; those with SITB were younger and more likely to be female.

In addition to age and sex, covariates included “genetic principal components,” which Dr. Ashley-Koch said accounts for combining data of individuals with different ethnic/racial backgrounds.

Through meta-analysis, the investigators identified seven genome-wide, significant cross-ancestry risk loci.

To evaluate whether the findings could be replicated, researchers used the International Suicide Genetics Consortium (ISGC), a primarily civilian international consortium of roughly 550,000 individuals of mostly European ancestry.

The analysis showed the top replicated cross-ancestry risk locus was rs6557168, an intronic single-nucleotide variant (SNV) in the ESR1 gene that encodes an estrogen receptor. Previous work identified ESR1 as a causal genetic driver gene for development of posttraumatic stress disorder and depression, both of which are risk factors for SITB among veterans.

The second-strongest replicated cross-ancestry locus was rs12808482, an intronic variant in the DRD2 gene, which encodes the D₂ dopamine-receptor subtype. The authors noted DRD2 is highly expressed in brain tissue and has been associated with numerous psychiatric phenotypes.

Research suggests DRD2 is associated with other risk factors for SITB, such as schizophrenia, mood disorders, and attention-deficit/hyperactivity disorder, but DRD2 could also contribute to suicide risk directly. The authors noted it is highly expressed in the prefrontal cortex, nucleus accumbens, substantia nigra, and hippocampus.
 

Outstanding candidate gene

The study revealed a cross-ancestry GWS association for rs10671545, a variant in DCC, which is “also an outstanding candidate gene,” the investigators write.

They note it is expressed in brain tissue, is involved in synaptic plasticity, axon guidance, and circadian entrainment, and has been associated with multiple psychiatric phenotypes.

Researchers also found what they called “intriguing” cross-ancestry GWS associations for the TRAF3 gene, which regulates type-1 interferon production. Many patients receiving interferon therapy develop major depressive disorder and suicidal ideation.

TRAF3 is also associated with antisocial behavior, substance use, and ADHD. Lithium – a standard treatment for bipolar disorder that reduces suicide risk – modulates the expression of TRAF3.

Dr. Ashley-Koch noted the replication of these loci (ESR1, DRD2, TRAF3, and DCC) was in a population of mostly White civilians. “This suggests to us that at least some of the risk for suicidal thoughts and behaviors does cross ancestry and also crosses military and civilian populations.”

It was “exciting” that all four genes the study focused on had previously been implicated in other psychiatric disorders, said Dr. Ashley-Koch. “What gave us a little more confidence, above and beyond the replication, was that these genes are somehow important for psychiatric disorders, and not any psychiatric disorders, but the ones that are also associated with a high risk of suicide behavior, such as depression, PTSD, schizophrenia, and ADHD.”

The findings will not have an immediate impact on clinical practice, said Dr. Ashley-Koch.

“We need to take the next step, which is to try to understand how these genetic factors may impact risk and what else is happening biologically to increase that risk. Then once we do that, hopefully we can develop some new treatments,” she added.
 

‘Valuable and noble’ research

Commenting on the study, Elspeth Cameron Ritchie, MD, chief of psychiatry at Medstar Washington Hospital Center, Washington, said this kind of genetic research is “valuable and noble.”

Researchers have long been interested in risk factors for suicide among military personnel and veterans, said Dr. Ritchie. Evidence to date suggests being a young male is a risk factor as is feeling excluded or not fitting into the unit, and drug or alcohol addiction.

Dr. Ritchie noted other psychiatric disorders, including schizophrenia, depression, and bipolar disorder, are at least partially inherited.

She noted the study’s findings should not be used to discriminate against those who might have the identified genetic loci without clearer evidence of their impact.

“If we were able to identify these genes, would we start screening everybody who joins the military to see if they have these genes, and how would that impact the ability to recruit or retain personnel?”

She agreed additional work is needed to determine if and how carrying these genes might impact clinical care.

In addition, she pointed out that behavior is influenced not only by genetic load but also by environment. “This study may show the impact of the genetic load a little bit more clearly; right now, we tend to look at environmental factors.”

The study was supported by an award from the Clinical Science Research and Development (CSR&D) service of the Veterans Health Administration’s Office of Research and Development. The work was also supported in part by the joint U.S. Department of Veterans Affairs and U.S. Department of Energy MVP CHAMPION program.

Dr. Ashley-Koch reported grants from Veterans Administration during the conduct of the study. Several other coauthors report relationships with industry, nonprofit organizations, and government agencies. The full list can be found with the original article. Dr. Ritchie reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A genome-wide association study (GWAS) of suicidal thoughts and behaviors (SITB) has identified significant cross-ancestry risk loci. The findings provide further evidence of a genetic basis for SITB.

“It’s really important for us to continue to study the genetic risk factors for suicidal behaviors so we can really understand the biology and develop better treatments,” study investigator Allison E. Ashley-Koch, PhD, professor in the department of medicine at Duke University Medical Center, Durham, N.C., told this news organization.

The findings were published online in JAMA Psychiatry).
 

SITB heritability

Suicide is a leading cause of death, particularly among individuals aged 15-29 years. Whereas the global rate of suicide has decreased by 36% in the past 20 years, the rate in the United States has increased by 35%, with the greatest rise in military veterans.

Twin studies suggest heritability for SITB is between 30% and 55%, but the molecular genetic basis of SITB remains elusive.

To address this research gap, investigators conducted a study of 633,778 U.S. military veterans from the Million Veteran Program (MVP) cohort. Of these, 71% had European ancestry, 19% had African ancestry, 8% were Hispanic, and 1% were Asian. Just under 10% of the sample was female.

Study participants donated a blood sample and agreed to have their genetic information linked with their electronic health record data.

From diagnostic codes and other sources, researchers identified 121,211 individuals with SITB. They classified participants with no documented lifetime history of suicidal ideation, suicide attempt, or suicide death as controls.

Rates of SITB differed significantly by ancestry – 25% in those with African or Hispanic ancestry, 21% in those with Asian ancestry, and 16.8% in those with European ancestry. Rates also differed by age and sex; those with SITB were younger and more likely to be female.

In addition to age and sex, covariates included “genetic principal components,” which Dr. Ashley-Koch said accounts for combining data of individuals with different ethnic/racial backgrounds.

Through meta-analysis, the investigators identified seven genome-wide, significant cross-ancestry risk loci.

To evaluate whether the findings could be replicated, researchers used the International Suicide Genetics Consortium (ISGC), a primarily civilian international consortium of roughly 550,000 individuals of mostly European ancestry.

The analysis showed the top replicated cross-ancestry risk locus was rs6557168, an intronic single-nucleotide variant (SNV) in the ESR1 gene that encodes an estrogen receptor. Previous work identified ESR1 as a causal genetic driver gene for development of posttraumatic stress disorder and depression, both of which are risk factors for SITB among veterans.

The second-strongest replicated cross-ancestry locus was rs12808482, an intronic variant in the DRD2 gene, which encodes the D₂ dopamine-receptor subtype. The authors noted DRD2 is highly expressed in brain tissue and has been associated with numerous psychiatric phenotypes.

Research suggests DRD2 is associated with other risk factors for SITB, such as schizophrenia, mood disorders, and attention-deficit/hyperactivity disorder, but DRD2 could also contribute to suicide risk directly. The authors noted it is highly expressed in the prefrontal cortex, nucleus accumbens, substantia nigra, and hippocampus.
 

Outstanding candidate gene

The study revealed a cross-ancestry GWS association for rs10671545, a variant in DCC, which is “also an outstanding candidate gene,” the investigators write.

They note it is expressed in brain tissue, is involved in synaptic plasticity, axon guidance, and circadian entrainment, and has been associated with multiple psychiatric phenotypes.

Researchers also found what they called “intriguing” cross-ancestry GWS associations for the TRAF3 gene, which regulates type-1 interferon production. Many patients receiving interferon therapy develop major depressive disorder and suicidal ideation.

TRAF3 is also associated with antisocial behavior, substance use, and ADHD. Lithium – a standard treatment for bipolar disorder that reduces suicide risk – modulates the expression of TRAF3.

Dr. Ashley-Koch noted the replication of these loci (ESR1, DRD2, TRAF3, and DCC) was in a population of mostly White civilians. “This suggests to us that at least some of the risk for suicidal thoughts and behaviors does cross ancestry and also crosses military and civilian populations.”

It was “exciting” that all four genes the study focused on had previously been implicated in other psychiatric disorders, said Dr. Ashley-Koch. “What gave us a little more confidence, above and beyond the replication, was that these genes are somehow important for psychiatric disorders, and not any psychiatric disorders, but the ones that are also associated with a high risk of suicide behavior, such as depression, PTSD, schizophrenia, and ADHD.”

The findings will not have an immediate impact on clinical practice, said Dr. Ashley-Koch.

“We need to take the next step, which is to try to understand how these genetic factors may impact risk and what else is happening biologically to increase that risk. Then once we do that, hopefully we can develop some new treatments,” she added.
 

‘Valuable and noble’ research

Commenting on the study, Elspeth Cameron Ritchie, MD, chief of psychiatry at Medstar Washington Hospital Center, Washington, said this kind of genetic research is “valuable and noble.”

Researchers have long been interested in risk factors for suicide among military personnel and veterans, said Dr. Ritchie. Evidence to date suggests being a young male is a risk factor as is feeling excluded or not fitting into the unit, and drug or alcohol addiction.

Dr. Ritchie noted other psychiatric disorders, including schizophrenia, depression, and bipolar disorder, are at least partially inherited.

She noted the study’s findings should not be used to discriminate against those who might have the identified genetic loci without clearer evidence of their impact.

“If we were able to identify these genes, would we start screening everybody who joins the military to see if they have these genes, and how would that impact the ability to recruit or retain personnel?”

She agreed additional work is needed to determine if and how carrying these genes might impact clinical care.

In addition, she pointed out that behavior is influenced not only by genetic load but also by environment. “This study may show the impact of the genetic load a little bit more clearly; right now, we tend to look at environmental factors.”

The study was supported by an award from the Clinical Science Research and Development (CSR&D) service of the Veterans Health Administration’s Office of Research and Development. The work was also supported in part by the joint U.S. Department of Veterans Affairs and U.S. Department of Energy MVP CHAMPION program.

Dr. Ashley-Koch reported grants from Veterans Administration during the conduct of the study. Several other coauthors report relationships with industry, nonprofit organizations, and government agencies. The full list can be found with the original article. Dr. Ritchie reports no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Posttraumatic stress disorder (PTSD) is a chronic and disabling psychiatric disorder. The lifetime prevalence among American adults is 6.8%.¹ Management of PTSD includes treating distressing symptoms, reducing avoidant behaviors, treating comorbid conditions (eg, depression, substance use disorders, or mood dysregulation), and improving adaptive functioning, which includes restoring a psychological sense of safety and trust. PTSD can be treated using evidence-based psychotherapies, pharmacotherapy, or a combination of both modalities. For adults, evidence-based treatment guidelines recommend the use of cognitive-behavioral therapy, cognitive processing therapy, cognitive therapy, and prolonged exposure therapy.² These guidelines also recommend (with some reservations) the use of brief eclectic psychotherapy, eye movement desensitization and reprocessing, and narrative exposure therapy.² Although the evidence base for the use of medications is not as strong as that for the psychotherapies listed above, the guidelines recommend the use of fluoxetine, paroxetine, sertraline, and venlafaxine.²

Currently available treatments for PTSD have significant limitations. For example, trauma-focused psychotherapies can have significant rates of nonresponse, partial response, or treatment dropout.^3,4 Additionally, such therapies are not widely accessible. As for pharmacotherapy, very few available options are supported by evidence, and the efficacy of these options is limited, as shown by the reports that only 60% of patients with PTSD show a response to selective serotonin reuptake inhibitors (SSRIs), and only 20% to 30% achieve complete remission.⁵ Additionally, it may take months for patients to achieve an acceptable level of improvement with medications. As a result, a substantial proportion of patients who seek treatment continue to remain symptomatic, with impaired levels of functioning. This lack of progress in PTSD treatment has been labeled as a national crisis, calling for an urgent need to find effective pharmacologic treatments for PTSD.⁶

In this article, we review 8 randomized controlled trials (RCTs) of treatments for PTSD published within the last 5 years (Table^7-14).

1. Feder A, Costi S, Rutter SB, et al. A randomized controlled trial of repeated ketamine administration for chronic posttraumatic stress disorder. Am J Psychiatry. 2021;178(2):193-202

Feder et al had previously found a significant and quick decrease in PTSD symptoms after a single dose of IV ketamine had. This is the first RCT to examine the effectiveness and safety of repeated IV ketamine infusions for the treatment of persistent PTSD.⁷ 

Study design

• This randomized, double-blind, parallel-arm controlled trial treated 30 individuals with chronic PTSD with 6 infusions of either ketamine (0.5 mg/kg) or midazolam (0.045 mg/kg) over 2 consecutive weeks. 
• Participants were individuals age 18 to 70 with a primary diagnosis of chronic PTSD according to the DSM-5 criteria and determined by The Structure Clinical Interview for DSM-5, with a score ≥30 on the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5).  
• Any severe or unstable medical condition, active suicidal or homicidal ideation, lifetime history of psychotic or bipolar disorder, current anorexia nervosa or bulimia, alcohol or substance use disorder within 3 months of screening, history of recreational ketamine or phencyclidine use on more than 1 occasion or any use in the previous 2 years, and ongoing treatment with a long-acting benzodiazepine or opioid medication were all considered exclusion criteria. Individuals who took short-acting benzodiazepines had their morning doses held on infusion days. Marijuana or cannabis derivatives were allowed. 
• The primary outcome measure was a change in PTSD symptom severity as measured with CAPS-5. This was administered before the first infusion and weekly thereafter. The Impact of Event Scale-Revised, the Montgomery–Åsberg Depression Rating Scale, and adverse effect measurements were used as secondary outcome measures. 
• Treatment response was defined as ≥30% symptom improvement 2 weeks after the first infusion as assessed with CAPS-5. 
• Individuals who responded to treatment were followed naturalistically weekly for up to 4 weeks and then monthly until loss of responder status, or up to 6 months if there was no loss of response. 

Outcomes

• At the second week, the mean CAPS-5 total score in the ketamine group was 11.88 points (SE = 3.96) lower than in the midazolam group (d = 1.13; 95% CI, 0.36 to 1.91).  
• In the ketamine group, 67% of patients responded to therapy, compared to 20% in the midazolam group.  
• Following the 2-week course of infusions, the median period until loss of response among ketamine responders was 27.5 days.  
• Ketamine infusions showed good tolerability and safety. There were no clinically significant adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Repeated ketamine infusions are effective in reducing symptom severity in individuals with chronic PTSD. 
• Limitations to this study include the exclusion of individuals with comorbid bipolar disorder, current alcohol or substance use disorder, or suicidal ideations, the small sample size, and a higher rate of transient dissociative symptoms in the ketamine group. 
• Future studies could evaluate the efficacy of repeated ketamine infusions in individuals with treatment-resistant PTSD. Also, further studies are required to assess the efficacy of novel interventions to prevent relapse and evaluate the efficacy, safety, and tolerability of periodic IV ketamine use as maintenance.  
• Additional research might determine whether pairing psychotherapy with ketamine administration can lessen the risk of recurrence for PTSD patients after stopping ketamine infusions. 

2. Rauch SAM, Kim HM, Powell C, et al. Efficacy of prolonged exposure therapy, sertraline hydrochloride, and their combination among combat veterans with posttraumatic stress disorder: a randomized clinical trial. JAMA Psychiatry. 2019;76(2):117-126

Clinical practice recommendations for PTSD have identified trauma-focused psychotherapies and SSRIs as very effective treatments. The few studies that have compared trauma-focused psychotherapy to SSRIs or to a combination of treatments are not generalizable, have significant limitations, or are primarily concerned with refractory disorders or augmentation techniques. This study evaluated the efficacy of prolonged exposure therapy (PE) plus placebo, PE plus sertraline, and sertraline plus enhanced medication management in the treatment of PTSD.⁸ 

Study design

• This randomized, 4-site, 24-week clinical trial divided participants into 3 subgroups: PE plus placebo, PE plus sertraline, and sertraline plus enhanced medication management. 
• Participants were veterans or service members of the Iraq and/or Afghanistan wars with combat-related PTSD and significant impairment as indicated by a CAPS score ≥50 for at least 3 months. The DSM-IV-TR version of CAPS was used because the DSM-5 version was not available at the time of the study.
• Individuals who had a current, imminent risk of suicide; active psychosis; alcohol or substance dependence in the past 8 weeks; inability to attend weekly appointments for the treatment period; prior intolerance to or failure of an adequate trial of PE or sertraline; medical illness likely to result in hospitalization or contraindication to study treatment; serious cognitive impairment; mild traumatic brain injury; or concurrent use of antidepressants, antipsychotics, benzodiazepines, prazosin, or sleep agents were excluded. 
• Participants completed up to thirteen 90-minute sessions of PE. 
• The sertraline dosage was titrated during a 10-week period and continued until Week 24. Dosages were adjusted between 50 and 200 mg/d, with the last dose increase at Week 10. 
• The primary outcome measure was symptom severity of PTSD in the past month as determined by CAPS score at Week 24.
• The secondary outcome was self-reported symptoms of PTSD (PTSD checklist [PCL] Specific Stressor Version), clinically meaningful change (reduction of ≥20 points or score ≤35 on CAPS), response (reduction of ≥50% in CAPS score), and remission (CAPS score ≤35). 

Outcomes

• At Week 24, 149 participants completed the study; 207 were included in the intent-to-treat analysis. 
• PTSD symptoms significantly decreased over 24 weeks, according to a modified intent-to-treat analysis utilizing a mixed model of repeated measurements; nevertheless, slopes were similar across therapy groups. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• Although the severity of PTSD symptoms decreased in all 3 subgroups, there was no difference in PTSD symptom severity or change in symptoms at Week 24 among all 3 subgroups.  
• The main limitation of this study was the inclusion of only combat veterans. 
• Further research should focus on enhancing treatment retention and should include administering sustained exposure therapy at brief intervals. 

3. Lehrner A, Hildebrandt T, Bierer LM, et al. A randomized, double-blind, placebo-controlled trial of hydrocortisone augmentation of prolonged exposure for PTSD in US combat veterans. Behav Res Ther. 2021;144:103924

First-line therapy for PTSD includes cognitive-behavioral therapies such as PE. However, because many people still have major adverse effects after receiving medication, improving treatment efficacy is a concern. Glucocorticoids promote extinction learning, and alterations in glucocorticoid signaling pathways have been associated with PTSD. Lehrner et al previously showed that adding hydrocortisone (HCORT) to PE therapy increased patients’ glucocorticoid sensitivity at baseline, improved treatment retention, and resulted in greater treatment improvements. This study evaluated HCORT in conjunction with PE for combat veterans with PTSD following deployment to Iraq and Afghanistan.⁹ 

Study design

• This randomized, double-blind, placebo-controlled trial administered HCORT 30 mg oral or placebo to 96 combat veterans 30 minutes before PE sessions.  
• Participants were veterans previously deployed to Afghanistan or Iraq with deployment-related PTSD >6 months with a minimum CAPS score of 60. They were unmedicated or on a stable psychotropic regimen for ≥4 weeks. 
• Exclusion criteria included a lifetime history of a primary psychotic disorder (bipolar I disorder or obsessive-compulsive disorder), medical or mental health condition other than PTSD that required immediate clinical attention, moderate to severe traumatic brain injury (TBI), substance abuse or dependence within the past 3 months, medical illness that contraindicated ingestion of hydrocortisone, acute suicide risk, and pregnancy or intent to become pregnant. 
• The primary outcome measures included PTSD severity as assessed with CAPS. 
• Secondary outcome measures included self-reported PTSD symptoms as assessed with the Posttraumatic Diagnostic Scale (PDS) and depression as assessed with the Beck Depression Inventory-II (BDI). These scales were administered pretreatment, posttreatment, and at 3-months follow-up. 

Outcomes

• Out of 96 veterans enrolled, 60 were randomized and 52 completed the treatment.  
• Five participants were considered recovered early and completed <12 sessions.
• Of those who completed treatment, 50 completed the 1-week posttreatment evaluations and 49 completed the 3-month follow-up evaluation.
• There was no difference in the proportion of dropouts (13.33%) across the conditions.
• HCORT failed to significantly improve either secondary outcomes or PTSD symptoms, according to an intent-to-treat analysis.
• However, exploratory analyses revealed that veterans with recent post-concussive symptoms and moderate TBI exposure saw a larger decrease in hyperarousal symptoms after PE therapy with HCORT augmentation.  
• The reduction in avoidance symptoms with HCORT augmentation was also larger in veterans with higher baseline glucocorticoid sensitivity. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• HCORT does not improve PTSD symptoms as assessed with the CAPS and PDS, or depression as assessed with the BDI. 
• The main limitation of this study is generalizability. 
• Further studies are needed to determine whether PE with HCORT could benefit veterans with indicators of enhanced glucocorticoid sensitivity, mild TBI, or postconcussive syndrome. 

4. Inslicht SS, Niles AN, Metzler TJ, et al. Randomized controlled experimental study of hydrocortisone and D-cycloserine effects on fear extinction in PTSD. Neuropsychopharmacology. 2022;47(11):1945-1952

PE, one of the most well-researched therapies for PTSD, is based on fear extinction. Exploring pharmacotherapies that improve fear extinction learning and their potential as supplements to PE is gaining increased attention. Such pharmacotherapies aim to improve the clinical impact of PE on the extent and persistence of symptom reduction. This study evaluated the effects of HCORT and D-cycloserine (DCS), a partial agonist of the N-methyl-D-aspartate (NMDA) receptor, on the learning and consolidation of fear extinction in patients with PTSD.¹⁰ 

Study design

• This double-blind, placebo-controlled, 3-group experimental design evaluated 90 individuals with PTSD who underwent fear conditioning with stimuli that was paired (CS+) or unpaired (CS−) with shock. 
• Participants were veterans and civilians age 18 to 65 recruited from VA outpatient and community clinics and internet advertisements who met the criteria for PTSD or subsyndromal PTSD (according to DSM-IV criteria) for at least 3 months. 
• Exclusion criteria included schizophrenia, bipolar disorder, substance abuse or dependence, alcohol dependence, previous moderate or severe head injury, seizure or neurological disorder, current infectious illness, systemic illness affecting CNS function, or other conditions known to affect psychophysiological responses. Excluded medications were antipsychotics, mood stabilizers, alpha- and beta-adrenergics, benzodiazepines, anticonvulsants, antihypertensives, sympathomimetics, anticholinergics, and steroids.  
• Extinction learning took place 72 hours after extinction, and extinction retention was evaluated 1 week later. Placebo, HCORT 25 mg, or DCS 50 mg was given 1 hour before extinction learning. 
• Clinical measures included PTSD diagnosis and symptom levels as determined by interview using CAPS and skin conduction response. 

Outcomes

• The mean shock level, mean pre-stimulus skin conductance level (SCL) during habituation, and mean SC orienting response during the habituation phase did not differ between groups and were not associated with differential fear conditioning. Therefore, variations in shock level preference, resting SCL, or SC orienting response magnitude are unlikely to account for differences between groups during extinction learning and retention.
• During extinction learning, the DCS and HCORT groups showed a reduced differential CS+/CS− skin conductance response (SCR) compared to placebo. 
• One week later, during the retention testing, there was a nonsignificant trend toward a smaller differential CS+/CS− SCR in the DCS group compared to placebo. HCORT and DCS administered as a single dosage facilitated fear extinction learning in individuals with PTSD symptoms. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• In traumatized people with PTSD symptoms, a single dosage of HCORT or DCS enhanced the learning of fear extinction compared to placebo. A nonsignificant trend toward better extinction retention in the DCS group but not the HCORT group was also visible. 
• These results imply that glucocorticoids and NMDA agonists have the potential to promote extinction learning in PTSD. 
• Limitations include a lack of measures of glucocorticoid receptor sensitivity or FKBP5. 
• Further studies could evaluate these findings with the addition of blood biomarker measures such as glucocorticoid receptor sensitivity or FKBP5.  

5. Mitchell JM, Bogenschutz M, Lilienstein A, et al. MDMA-assisted therapy for severe PTSD: a randomized, double-blind, placebo-controlled phase 3 study. Nat Med. 2021;27(6):1025-1033. doi:10.1038/s41591-021-01336-3

Poor PTSD treatment results are associated with numerous comorbid conditions, such as dissociation, depression, alcohol and substance use disorders, childhood trauma, and suicidal ideation, which frequently leads to treatment resistance. Therefore, it is crucial to find a treatment that works for individuals with PTSD who also have comorbid conditions. In animal models, 3,4-methylenedioxymethamphetamine (MDMA), an empathogen/entactogen with stimulant properties, has been shown to enhance fear memory extinction and modulate fear memory reconsolidation. This study evaluated the efficacy and safety of MDMA-assisted therapy for treating patients with severe PTSD, including those with common comorbidities.¹¹ 

Study design

• This randomized, double-blind, placebo-controlled, multi-site, phase 3 clinical trial evaluated individuals randomized to receive manualized therapy with MDMA or with placebo, combined with 3 preparatory and 9 integrative therapy sessions.  
• Participants were 90 individuals (46 randomized to MDMA and 44 to placebo) with PTSD with a symptom duration ≥6 months and CAPS-5 total severity score ≥35 at baseline. 
• Exclusion criteria included primary psychotic disorder, bipolar I disorder, eating disorders with active purging, major depressive disorder with psychotic features, dissociative identity disorder, personality disorders, current alcohol and substance use disorders, lactation or pregnancy, and any condition that could make receiving a sympathomimetic medication dangerous due to hypertension or tachycardia, including uncontrolled hypertension, history of arrhythmia, or marked baseline prolongation of QT and/or QTc interval. 
• Three 8-hour experimental sessions of either therapy with MDMA assistance or therapy with a placebo control were given during the treatment period, and they were spaced approximately 4 weeks apart. 
• In each session, participants received placebo or a single divided dose of MDMA 80 to 180 mg. 
• At baseline and 2 months after the last experimental sessions, PTSD symptoms were measured with CAPS-5, and functional impairment was measured with Sheehan Disability Scale (SDS). 
• The primary outcome measure was CAPS-5 total severity score at 18 weeks compared to baseline for MDMA-assisted therapy vs placebo-assisted therapy. 
• The secondary outcome measure was clinician-rated functional impairment using the mean difference in SDS total scores from baseline to 18 weeks for MDMA-assisted therapy vs placebo-assisted therapy. 

Outcomes

• MDMA was found to induce significant and robust attenuation in CAPS-5 score compared to placebo. 
• The mean change in CAPS-5 score in completers was –24.4 in the MDMA group and –13.9 in the placebo group. 
• MDMA significantly decreased the SDS total score. 
• MDMA did not induce suicidality, misuse, or QT prolongation. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• MDMA-assisted therapy is significantly more effective than manualized therapy with placebo in treating patients with severe PTSD, and it is also safe and well-tolerated, even in individuals with comorbidities. 
• No major safety issues were associated with MDMA-assisted treatment. 
• MDMA-assisted therapy should be promptly assessed for clinical usage because it has the potential to significantly transform the way PTSD is treated. 
• Limitations of this study include a smaller sample size (due to the COVID-19 pandemic); lack of ethnic and racial diversity; short duration; safety data were collected by site therapist, which limited the blinding; and the blinding of participants was difficult due to the subjective effects of MDMA, which could have resulted in expectation effects. 

6. Bonn-Miller MO, Sisley S, Riggs P, et al. The short-term impact of 3 smoked cannabis preparations versus placebo on PTSD symptoms: a randomized cross-over clinical trial. PLoS One. 2021;16(3):e0246990

Sertraline and paroxetine are the only FDA-approved medications for treating PTSD. Some evidence suggests cannabis may provide a therapeutic benefit for PTSD.¹⁵ This study examined the effects of 3 different preparations of cannabis for treating PTSD symptoms.¹²  

Study design

• This double-blind, randomized, placebo-controlled, crossover trial used 3 active treatment groups of cannabis: high delta-9-tetrahydrocannabinol (THC)/low cannabidiol (CBD), high CBD/low THC, and high THC/high CBD (THC+CBD). A low THC/low CBD preparation was used as a placebo. “High” content contained 9% to 15% concentration by weight of the respective cannabinoid, and “low” content contained <2% concentration by weight.  
• Inclusion criteria included being a US military veteran, meeting DSM-5 PTSD criteria for ≥6 months, having moderate symptom severity (CAPS-5 score ≥25), abstaining from cannabis 2 weeks prior to study and agreeing not to use any non-study cannabis during the trial, and being stable on medications/therapy prior to the study.  
• Exclusion criteria included women who were pregnant/nursing/child-bearing age and not taking an effective means of birth control; current/past serious mental illness, including psychotic and personality disorders; having a first-degree relative with a psychotic or bipolar disorder; having a high suicide risk based on Columbia-Suicide Severity Rating Scale; meeting DSM-5 criteria for moderate-severe cannabis use disorder; screening positive for illicit substances; or having significant medical disease.  
• Participants in Stage 1 (n = 80) were randomized to 1 of the 3 active treatments or placebo for 3 weeks. After a 2-week washout, participants in Stage 2 (n = 74) were randomized to receive for 3 weeks 1 of the 3 active treatments they had not previously received.
• During each stage, participants had ad libitum use for a maximum of 1.8 g/d. 
• The primary outcome was change in PTSD symptom severity by the end of Stage 1 as assessed with CAPS-5.
• Secondary outcomes included the PTSD Checklist for DSM-5 (PCL-5), the general depression subscale and anxiety subscale from the self-report Inventory of Depression and Anxiety Symptoms (IDAS), the Inventory of Psychosocial Functioning, and the Insomnia Severity Index. 

Outcomes

• Six participants did not continue to Stage 2. Three participants did not finish Stage 2 due to adverse effects, and 7 did not complete outcome measurements. The overall attrition rate was 16.3%. 
• There was no significant difference in total grams of smoked cannabis or placebo between the 4 treatment groups in Stage 1 at the end of 3 weeks. In Stage 2, there was a significant difference, with the THC+CBD group using more cannabis compared to the other 2 groups. 
• Each of the 4 groups had significant reductions in total CAPS-5 scores at the end of Stage 1, and there was no significant difference in CAPS-5 severity scores between the 4 groups.
• In Stage 1, PCL-5 scores were not significantly different between treatment groups from baseline to the end of stage. There was a significant difference in Stage 2 between the high CBD and THC+CBD groups, with the combined group reporting greater improvement of symptoms. 
• In Stage 2, the THC+CBD group reported greater reductions in pre/post IDAS social anxiety scores and IDAS general depression scores, and the high THC group reported greater reductions in pre/post IDAS social anxiety scores. 
• In Stage 1, 37 of 60 participants in the active groups reported at least 1 adverse event, and 45 of the 74 Stage 2 participants reported at least 1 adverse event. The most common adverse events were cough, throat irritation, and anxiety. Participants in the Stage 1 high THC group had a significant increase in reported withdrawal symptoms after 1 week of stopping use.  

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• This first randomized, placebo-control trial of cannabis in US veterans did not show a significant difference among treatment groups, including placebo, on the primary outcome of CAPS-5 score. All 4 groups had significant reductions in symptom severity on CAPS-5 and showed good tolerability.
• Prior beliefs about the effects of cannabis may have played a role in the reduction of PTSD symptoms in the placebo group.
• Many participants (n =34) were positive for THC during the screening process, so previous cannabis use/chronicity of cannabis use may have contributed.
• One limitation was that participants assigned to the Stage 1 high THC group had Cannabis Use Disorders Identification Test scores (which assesses cannabis use disorder risk) about 2 times greater than participants in other conditions.
• Another limitation was that total cannabis use was lower than expected, as participants in Stage 1 used 8.2 g to 14.6 g over 3 weeks, though they had access to up to 37.8 g. 
• There was no placebo in Stage 2.
• Future studies should look at longer treatment periods with more participants.

7. Youngstedt SD, Kline CE, Reynolds AM, et al. Bright light treatment of combat-related PTSD: a randomized controlled trial. Milit Med. 2022;187(3-4):e435-e444

Bright light therapy is an inexpensive treatment approach that may affect serotonergic pathways.¹⁶ This study examined bright light therapy for reducing PTSD symptoms and examined if improvement of PTSD is related to a shift in circadian rhythm.¹³  

Study design

• Veterans with combat-related PTSD had to have been stable on treatment for at least 8 weeks or to have not received any other PTSD treatments prior to the study.
• Participants were randomized to active treatment of 30 minutes daily 10,000 lux ultraviolet-filtered white light while sitting within 18 inches (n = 34) or a control condition of 30 minutes daily inactivated negative ion generator (n = 35) for 4 weeks.
• Inclusion criteria included a CAPS score ≥30.
•  Exclusion criteria included high suicidality, high probability of alcohol/substance abuse in the past 3 months, bipolar disorder/mania/schizophrenia/psychosis, ophthalmologic deformities, shift work in past 2 months or travel across time zones in past 2 weeks, head trauma, high outdoor light exposure, history of winter depression, history of seizures, or myocardial infarction/stroke/cancer within 3 years.
• Primary outcomes were improvement on CAPS and Clinical Global Impressions-Improvement scale (CGI-IM) score at Week 4.
• Wrist actigraphy recordings measured sleep.
• Other measurements included the Hamilton Depression Rating Scale (HAM-D), Hamilton atypical symptoms (HAM-AS), PCL-Military (PCL-M), Pittsburg Sleep Quality Index (PSQI), BDI, Spielberger State-Trait Anxiety Inventory (STAI Form Y-2), Beck Suicide Scale, and Systematic Assessment for Treatment Emergent Effects questionnaire.

Outcomes

• There was a significant decrease in CAPS score in participants who received bright light therapy compared to controls. Treatment response (defined as ≥33% reduction in score) was significantly greater in the bright light (44%) vs control (8.6%) group. No participants achieved remission. 
• There was a significant improvement in CGI-IM scores in the bright light group, but no significant difference in participants who were judged to improve “much” or “very much.”
• PCL-M scores did not change significantly between groups, although a significantly greater proportion of participants had treatment response in the bright light group (33%) vs control (6%).
• There were no significant changes in HAM-D, HAM-AS, STAI, BDI, actigraphic estimates of sleep, or PSQI scores. 
• Bright light therapy resulted in phase advancement while control treatment had phase delay. 
• There were no significant differences in adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Bright light therapy may be a treatment option or adjunct for combat-related PTSD as seen by improvement on CAPS and CGI scores, as well as a greater treatment response seen on CAPS and PCL-5 scores in the bright light group.  
• There was no significant difference for other measures, including depression, anxiety, and sleep.  
• Limitations include excluding patients with a wide variety of medical or psychiatric comorbidities, as well as limited long-term follow up data.  
• Other limitations include not knowing the precise amount of time participants stayed in front of the light device and loss of some actigraphic data (data from only 49 of 69 participants).  

8. Peterson AL, Mintz J, Moring JC, et al. In-office, in-home, and telehealth cognitive processing therapy for posttraumatic stress disorder in veterans: a randomized clinical trial. BMC Psychiatry. 2022;22(1):41 doi:10.1186/s12888-022-03699-4

Cognitive processing therapy (CPT), a type of trauma-focused psychotherapy, is an effective treatment for PTSD in the military population.^17,18 However, patients may not be able to or want to participate in such therapy due to barriers such as difficulty arranging transportation, being homebound due to injury, concerns about COVID-19, stigma, familial obligations, and job constraints. This study looked at if CPT delivered face-to-face at the patient’s home or via telehealth in home would be effective and increase accessibility.¹⁴  

Study design

• Participants (n = 120) were active-duty military and veterans who met DSM-5 criteria for PTSD. They were randomized to receive CPT in the office, in their home, or via telehealth. Participants could choose not to partake in 1 modality but were then randomized to 1 of the other 2. 
• Exclusion criteria included suicide/homicide risk needing intervention, items/situations pertaining to danger (ie, aggressive pet or unsafe neighborhood), significant alcohol/substance use, active psychosis, and impaired cognitive functioning. 
• The primary outcome measurement was change in PCL-5 and CAPS-5 score over 6 months. The BDI-II was used to assess depressive symptoms.  
• Secondary outcomes included the Reliable Change Index (defined as “an improvement of 10 or more points that was sustained at all subsequent assessments”) on the PCL-5 and remission on the CAPS-5.
• CPT was delivered in 60-minute sessions twice a week for 6 weeks. Participants who did not have electronic resources were loaned a telehealth apparatus. 

Outcomes

• Overall, 57% of participants opted out of 1 modality, which resulted in fewer participants being placed into the in-home arm (n = 32). Most participants chose not to do in-home treatments (54%), followed by in-office (29%), and telehealth (17%). 
• There was a significant posttreatment improvement in PCL-5 scores in all treatment arms, with improvement greater with in-home (d = 2.1) and telehealth (d = 2.0) vs in-office (d=1.3). The in-home and telehealth scores were significantly improved compared to in-office, and the difference between in-home and telehealth PCL-5 scores was minimal.
• At 6 months posttreatment, the differences between the 3 treatment groups on PCL-5 score were negligible. 
• CAPS-5 scores were significantly improved in all treatment arms, with improvement largest with in-home treatment; however, the differences between the groups were not significant.  
• BDI-II scores improved in all modalities but were larger in the in-home (d = 1.2) and telehealth (d = 1.1) arms than the in-office arm (d = 0.52). 
• Therapist time commitment was greater for the in-home and in-office arms (2 hours/session) than the telehealth arm (1 hour/session). This difference was due to commuting time for the patient or therapist.
• The dropout rate was not statistically significant between the groups.
• Adverse events did not significantly differ per group. The most commonly reported ones included nightmares, sleep difficulty, depression, anxiety, and irritability.

Conclusions/limitations

• Patients undergoing CPT had significant improvement in PTSD symptoms, with posttreatment PCL-5 improvement approximately twice as large in those who received the in-home and telehealth modalities vs in-office treatment. 
• The group differences were not seen on CAPS-5 scores at posttreatment, or PCL-5 or CAPS-5 scores at 6 months posttreatment.  
• In-home CPT was declined the most, which suggests that in-home distractions or the stigma of a mental health clinician being in their home played a role in patients’ decision-making. However, in-home CPT produced the greatest amount of improvement in PTSD symptoms. The authors concluded that in-home therapy should be reserved for those who are homebound or have travel limitations.  
• This study shows evidence that telehealth may be a good modality for CPT, as seen by improvement in PTSD symptoms and good acceptability and retention. 
• Limitations include more patients opting out of in-home CPT, and reimbursement for travel may not be available in the real-world setting.  

Posttraumatic stress disorder (PTSD) is a chronic and disabling psychiatric disorder. The lifetime prevalence among American adults is 6.8%.¹ Management of PTSD includes treating distressing symptoms, reducing avoidant behaviors, treating comorbid conditions (eg, depression, substance use disorders, or mood dysregulation), and improving adaptive functioning, which includes restoring a psychological sense of safety and trust. PTSD can be treated using evidence-based psychotherapies, pharmacotherapy, or a combination of both modalities. For adults, evidence-based treatment guidelines recommend the use of cognitive-behavioral therapy, cognitive processing therapy, cognitive therapy, and prolonged exposure therapy.² These guidelines also recommend (with some reservations) the use of brief eclectic psychotherapy, eye movement desensitization and reprocessing, and narrative exposure therapy.² Although the evidence base for the use of medications is not as strong as that for the psychotherapies listed above, the guidelines recommend the use of fluoxetine, paroxetine, sertraline, and venlafaxine.²

Currently available treatments for PTSD have significant limitations. For example, trauma-focused psychotherapies can have significant rates of nonresponse, partial response, or treatment dropout.^3,4 Additionally, such therapies are not widely accessible. As for pharmacotherapy, very few available options are supported by evidence, and the efficacy of these options is limited, as shown by the reports that only 60% of patients with PTSD show a response to selective serotonin reuptake inhibitors (SSRIs), and only 20% to 30% achieve complete remission.⁵ Additionally, it may take months for patients to achieve an acceptable level of improvement with medications. As a result, a substantial proportion of patients who seek treatment continue to remain symptomatic, with impaired levels of functioning. This lack of progress in PTSD treatment has been labeled as a national crisis, calling for an urgent need to find effective pharmacologic treatments for PTSD.⁶

In this article, we review 8 randomized controlled trials (RCTs) of treatments for PTSD published within the last 5 years (Table^7-14).

1. Feder A, Costi S, Rutter SB, et al. A randomized controlled trial of repeated ketamine administration for chronic posttraumatic stress disorder. Am J Psychiatry. 2021;178(2):193-202

Feder et al had previously found a significant and quick decrease in PTSD symptoms after a single dose of IV ketamine had. This is the first RCT to examine the effectiveness and safety of repeated IV ketamine infusions for the treatment of persistent PTSD.⁷ 

Study design

• This randomized, double-blind, parallel-arm controlled trial treated 30 individuals with chronic PTSD with 6 infusions of either ketamine (0.5 mg/kg) or midazolam (0.045 mg/kg) over 2 consecutive weeks. 
• Participants were individuals age 18 to 70 with a primary diagnosis of chronic PTSD according to the DSM-5 criteria and determined by The Structure Clinical Interview for DSM-5, with a score ≥30 on the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5).  
• Any severe or unstable medical condition, active suicidal or homicidal ideation, lifetime history of psychotic or bipolar disorder, current anorexia nervosa or bulimia, alcohol or substance use disorder within 3 months of screening, history of recreational ketamine or phencyclidine use on more than 1 occasion or any use in the previous 2 years, and ongoing treatment with a long-acting benzodiazepine or opioid medication were all considered exclusion criteria. Individuals who took short-acting benzodiazepines had their morning doses held on infusion days. Marijuana or cannabis derivatives were allowed. 
• The primary outcome measure was a change in PTSD symptom severity as measured with CAPS-5. This was administered before the first infusion and weekly thereafter. The Impact of Event Scale-Revised, the Montgomery–Åsberg Depression Rating Scale, and adverse effect measurements were used as secondary outcome measures. 
• Treatment response was defined as ≥30% symptom improvement 2 weeks after the first infusion as assessed with CAPS-5. 
• Individuals who responded to treatment were followed naturalistically weekly for up to 4 weeks and then monthly until loss of responder status, or up to 6 months if there was no loss of response. 

Outcomes

• At the second week, the mean CAPS-5 total score in the ketamine group was 11.88 points (SE = 3.96) lower than in the midazolam group (d = 1.13; 95% CI, 0.36 to 1.91).  
• In the ketamine group, 67% of patients responded to therapy, compared to 20% in the midazolam group.  
• Following the 2-week course of infusions, the median period until loss of response among ketamine responders was 27.5 days.  
• Ketamine infusions showed good tolerability and safety. There were no clinically significant adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Repeated ketamine infusions are effective in reducing symptom severity in individuals with chronic PTSD. 
• Limitations to this study include the exclusion of individuals with comorbid bipolar disorder, current alcohol or substance use disorder, or suicidal ideations, the small sample size, and a higher rate of transient dissociative symptoms in the ketamine group. 
• Future studies could evaluate the efficacy of repeated ketamine infusions in individuals with treatment-resistant PTSD. Also, further studies are required to assess the efficacy of novel interventions to prevent relapse and evaluate the efficacy, safety, and tolerability of periodic IV ketamine use as maintenance.  
• Additional research might determine whether pairing psychotherapy with ketamine administration can lessen the risk of recurrence for PTSD patients after stopping ketamine infusions. 

2. Rauch SAM, Kim HM, Powell C, et al. Efficacy of prolonged exposure therapy, sertraline hydrochloride, and their combination among combat veterans with posttraumatic stress disorder: a randomized clinical trial. JAMA Psychiatry. 2019;76(2):117-126

Clinical practice recommendations for PTSD have identified trauma-focused psychotherapies and SSRIs as very effective treatments. The few studies that have compared trauma-focused psychotherapy to SSRIs or to a combination of treatments are not generalizable, have significant limitations, or are primarily concerned with refractory disorders or augmentation techniques. This study evaluated the efficacy of prolonged exposure therapy (PE) plus placebo, PE plus sertraline, and sertraline plus enhanced medication management in the treatment of PTSD.⁸ 

Study design

• This randomized, 4-site, 24-week clinical trial divided participants into 3 subgroups: PE plus placebo, PE plus sertraline, and sertraline plus enhanced medication management. 
• Participants were veterans or service members of the Iraq and/or Afghanistan wars with combat-related PTSD and significant impairment as indicated by a CAPS score ≥50 for at least 3 months. The DSM-IV-TR version of CAPS was used because the DSM-5 version was not available at the time of the study.
• Individuals who had a current, imminent risk of suicide; active psychosis; alcohol or substance dependence in the past 8 weeks; inability to attend weekly appointments for the treatment period; prior intolerance to or failure of an adequate trial of PE or sertraline; medical illness likely to result in hospitalization or contraindication to study treatment; serious cognitive impairment; mild traumatic brain injury; or concurrent use of antidepressants, antipsychotics, benzodiazepines, prazosin, or sleep agents were excluded. 
• Participants completed up to thirteen 90-minute sessions of PE. 
• The sertraline dosage was titrated during a 10-week period and continued until Week 24. Dosages were adjusted between 50 and 200 mg/d, with the last dose increase at Week 10. 
• The primary outcome measure was symptom severity of PTSD in the past month as determined by CAPS score at Week 24.
• The secondary outcome was self-reported symptoms of PTSD (PTSD checklist [PCL] Specific Stressor Version), clinically meaningful change (reduction of ≥20 points or score ≤35 on CAPS), response (reduction of ≥50% in CAPS score), and remission (CAPS score ≤35). 

Outcomes

• At Week 24, 149 participants completed the study; 207 were included in the intent-to-treat analysis. 
• PTSD symptoms significantly decreased over 24 weeks, according to a modified intent-to-treat analysis utilizing a mixed model of repeated measurements; nevertheless, slopes were similar across therapy groups. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• Although the severity of PTSD symptoms decreased in all 3 subgroups, there was no difference in PTSD symptom severity or change in symptoms at Week 24 among all 3 subgroups.  
• The main limitation of this study was the inclusion of only combat veterans. 
• Further research should focus on enhancing treatment retention and should include administering sustained exposure therapy at brief intervals. 

3. Lehrner A, Hildebrandt T, Bierer LM, et al. A randomized, double-blind, placebo-controlled trial of hydrocortisone augmentation of prolonged exposure for PTSD in US combat veterans. Behav Res Ther. 2021;144:103924

First-line therapy for PTSD includes cognitive-behavioral therapies such as PE. However, because many people still have major adverse effects after receiving medication, improving treatment efficacy is a concern. Glucocorticoids promote extinction learning, and alterations in glucocorticoid signaling pathways have been associated with PTSD. Lehrner et al previously showed that adding hydrocortisone (HCORT) to PE therapy increased patients’ glucocorticoid sensitivity at baseline, improved treatment retention, and resulted in greater treatment improvements. This study evaluated HCORT in conjunction with PE for combat veterans with PTSD following deployment to Iraq and Afghanistan.⁹ 

Study design

• This randomized, double-blind, placebo-controlled trial administered HCORT 30 mg oral or placebo to 96 combat veterans 30 minutes before PE sessions.  
• Participants were veterans previously deployed to Afghanistan or Iraq with deployment-related PTSD >6 months with a minimum CAPS score of 60. They were unmedicated or on a stable psychotropic regimen for ≥4 weeks. 
• Exclusion criteria included a lifetime history of a primary psychotic disorder (bipolar I disorder or obsessive-compulsive disorder), medical or mental health condition other than PTSD that required immediate clinical attention, moderate to severe traumatic brain injury (TBI), substance abuse or dependence within the past 3 months, medical illness that contraindicated ingestion of hydrocortisone, acute suicide risk, and pregnancy or intent to become pregnant. 
• The primary outcome measures included PTSD severity as assessed with CAPS. 
• Secondary outcome measures included self-reported PTSD symptoms as assessed with the Posttraumatic Diagnostic Scale (PDS) and depression as assessed with the Beck Depression Inventory-II (BDI). These scales were administered pretreatment, posttreatment, and at 3-months follow-up. 

Outcomes

• Out of 96 veterans enrolled, 60 were randomized and 52 completed the treatment.  
• Five participants were considered recovered early and completed <12 sessions.
• Of those who completed treatment, 50 completed the 1-week posttreatment evaluations and 49 completed the 3-month follow-up evaluation.
• There was no difference in the proportion of dropouts (13.33%) across the conditions.
• HCORT failed to significantly improve either secondary outcomes or PTSD symptoms, according to an intent-to-treat analysis.
• However, exploratory analyses revealed that veterans with recent post-concussive symptoms and moderate TBI exposure saw a larger decrease in hyperarousal symptoms after PE therapy with HCORT augmentation.  
• The reduction in avoidance symptoms with HCORT augmentation was also larger in veterans with higher baseline glucocorticoid sensitivity. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• HCORT does not improve PTSD symptoms as assessed with the CAPS and PDS, or depression as assessed with the BDI. 
• The main limitation of this study is generalizability. 
• Further studies are needed to determine whether PE with HCORT could benefit veterans with indicators of enhanced glucocorticoid sensitivity, mild TBI, or postconcussive syndrome. 

4. Inslicht SS, Niles AN, Metzler TJ, et al. Randomized controlled experimental study of hydrocortisone and D-cycloserine effects on fear extinction in PTSD. Neuropsychopharmacology. 2022;47(11):1945-1952

PE, one of the most well-researched therapies for PTSD, is based on fear extinction. Exploring pharmacotherapies that improve fear extinction learning and their potential as supplements to PE is gaining increased attention. Such pharmacotherapies aim to improve the clinical impact of PE on the extent and persistence of symptom reduction. This study evaluated the effects of HCORT and D-cycloserine (DCS), a partial agonist of the N-methyl-D-aspartate (NMDA) receptor, on the learning and consolidation of fear extinction in patients with PTSD.¹⁰ 

Study design

• This double-blind, placebo-controlled, 3-group experimental design evaluated 90 individuals with PTSD who underwent fear conditioning with stimuli that was paired (CS+) or unpaired (CS−) with shock. 
• Participants were veterans and civilians age 18 to 65 recruited from VA outpatient and community clinics and internet advertisements who met the criteria for PTSD or subsyndromal PTSD (according to DSM-IV criteria) for at least 3 months. 
• Exclusion criteria included schizophrenia, bipolar disorder, substance abuse or dependence, alcohol dependence, previous moderate or severe head injury, seizure or neurological disorder, current infectious illness, systemic illness affecting CNS function, or other conditions known to affect psychophysiological responses. Excluded medications were antipsychotics, mood stabilizers, alpha- and beta-adrenergics, benzodiazepines, anticonvulsants, antihypertensives, sympathomimetics, anticholinergics, and steroids.  
• Extinction learning took place 72 hours after extinction, and extinction retention was evaluated 1 week later. Placebo, HCORT 25 mg, or DCS 50 mg was given 1 hour before extinction learning. 
• Clinical measures included PTSD diagnosis and symptom levels as determined by interview using CAPS and skin conduction response. 

Outcomes

• The mean shock level, mean pre-stimulus skin conductance level (SCL) during habituation, and mean SC orienting response during the habituation phase did not differ between groups and were not associated with differential fear conditioning. Therefore, variations in shock level preference, resting SCL, or SC orienting response magnitude are unlikely to account for differences between groups during extinction learning and retention.
• During extinction learning, the DCS and HCORT groups showed a reduced differential CS+/CS− skin conductance response (SCR) compared to placebo. 
• One week later, during the retention testing, there was a nonsignificant trend toward a smaller differential CS+/CS− SCR in the DCS group compared to placebo. HCORT and DCS administered as a single dosage facilitated fear extinction learning in individuals with PTSD symptoms. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• In traumatized people with PTSD symptoms, a single dosage of HCORT or DCS enhanced the learning of fear extinction compared to placebo. A nonsignificant trend toward better extinction retention in the DCS group but not the HCORT group was also visible. 
• These results imply that glucocorticoids and NMDA agonists have the potential to promote extinction learning in PTSD. 
• Limitations include a lack of measures of glucocorticoid receptor sensitivity or FKBP5. 
• Further studies could evaluate these findings with the addition of blood biomarker measures such as glucocorticoid receptor sensitivity or FKBP5.  

5. Mitchell JM, Bogenschutz M, Lilienstein A, et al. MDMA-assisted therapy for severe PTSD: a randomized, double-blind, placebo-controlled phase 3 study. Nat Med. 2021;27(6):1025-1033. doi:10.1038/s41591-021-01336-3

Poor PTSD treatment results are associated with numerous comorbid conditions, such as dissociation, depression, alcohol and substance use disorders, childhood trauma, and suicidal ideation, which frequently leads to treatment resistance. Therefore, it is crucial to find a treatment that works for individuals with PTSD who also have comorbid conditions. In animal models, 3,4-methylenedioxymethamphetamine (MDMA), an empathogen/entactogen with stimulant properties, has been shown to enhance fear memory extinction and modulate fear memory reconsolidation. This study evaluated the efficacy and safety of MDMA-assisted therapy for treating patients with severe PTSD, including those with common comorbidities.¹¹ 

Study design

• This randomized, double-blind, placebo-controlled, multi-site, phase 3 clinical trial evaluated individuals randomized to receive manualized therapy with MDMA or with placebo, combined with 3 preparatory and 9 integrative therapy sessions.  
• Participants were 90 individuals (46 randomized to MDMA and 44 to placebo) with PTSD with a symptom duration ≥6 months and CAPS-5 total severity score ≥35 at baseline. 
• Exclusion criteria included primary psychotic disorder, bipolar I disorder, eating disorders with active purging, major depressive disorder with psychotic features, dissociative identity disorder, personality disorders, current alcohol and substance use disorders, lactation or pregnancy, and any condition that could make receiving a sympathomimetic medication dangerous due to hypertension or tachycardia, including uncontrolled hypertension, history of arrhythmia, or marked baseline prolongation of QT and/or QTc interval. 
• Three 8-hour experimental sessions of either therapy with MDMA assistance or therapy with a placebo control were given during the treatment period, and they were spaced approximately 4 weeks apart. 
• In each session, participants received placebo or a single divided dose of MDMA 80 to 180 mg. 
• At baseline and 2 months after the last experimental sessions, PTSD symptoms were measured with CAPS-5, and functional impairment was measured with Sheehan Disability Scale (SDS). 
• The primary outcome measure was CAPS-5 total severity score at 18 weeks compared to baseline for MDMA-assisted therapy vs placebo-assisted therapy. 
• The secondary outcome measure was clinician-rated functional impairment using the mean difference in SDS total scores from baseline to 18 weeks for MDMA-assisted therapy vs placebo-assisted therapy. 

Outcomes

• MDMA was found to induce significant and robust attenuation in CAPS-5 score compared to placebo. 
• The mean change in CAPS-5 score in completers was –24.4 in the MDMA group and –13.9 in the placebo group. 
• MDMA significantly decreased the SDS total score. 
• MDMA did not induce suicidality, misuse, or QT prolongation. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• MDMA-assisted therapy is significantly more effective than manualized therapy with placebo in treating patients with severe PTSD, and it is also safe and well-tolerated, even in individuals with comorbidities. 
• No major safety issues were associated with MDMA-assisted treatment. 
• MDMA-assisted therapy should be promptly assessed for clinical usage because it has the potential to significantly transform the way PTSD is treated. 
• Limitations of this study include a smaller sample size (due to the COVID-19 pandemic); lack of ethnic and racial diversity; short duration; safety data were collected by site therapist, which limited the blinding; and the blinding of participants was difficult due to the subjective effects of MDMA, which could have resulted in expectation effects. 

6. Bonn-Miller MO, Sisley S, Riggs P, et al. The short-term impact of 3 smoked cannabis preparations versus placebo on PTSD symptoms: a randomized cross-over clinical trial. PLoS One. 2021;16(3):e0246990

Sertraline and paroxetine are the only FDA-approved medications for treating PTSD. Some evidence suggests cannabis may provide a therapeutic benefit for PTSD.¹⁵ This study examined the effects of 3 different preparations of cannabis for treating PTSD symptoms.¹²  

Study design

• This double-blind, randomized, placebo-controlled, crossover trial used 3 active treatment groups of cannabis: high delta-9-tetrahydrocannabinol (THC)/low cannabidiol (CBD), high CBD/low THC, and high THC/high CBD (THC+CBD). A low THC/low CBD preparation was used as a placebo. “High” content contained 9% to 15% concentration by weight of the respective cannabinoid, and “low” content contained <2% concentration by weight.  
• Inclusion criteria included being a US military veteran, meeting DSM-5 PTSD criteria for ≥6 months, having moderate symptom severity (CAPS-5 score ≥25), abstaining from cannabis 2 weeks prior to study and agreeing not to use any non-study cannabis during the trial, and being stable on medications/therapy prior to the study.  
• Exclusion criteria included women who were pregnant/nursing/child-bearing age and not taking an effective means of birth control; current/past serious mental illness, including psychotic and personality disorders; having a first-degree relative with a psychotic or bipolar disorder; having a high suicide risk based on Columbia-Suicide Severity Rating Scale; meeting DSM-5 criteria for moderate-severe cannabis use disorder; screening positive for illicit substances; or having significant medical disease.  
• Participants in Stage 1 (n = 80) were randomized to 1 of the 3 active treatments or placebo for 3 weeks. After a 2-week washout, participants in Stage 2 (n = 74) were randomized to receive for 3 weeks 1 of the 3 active treatments they had not previously received.
• During each stage, participants had ad libitum use for a maximum of 1.8 g/d. 
• The primary outcome was change in PTSD symptom severity by the end of Stage 1 as assessed with CAPS-5.
• Secondary outcomes included the PTSD Checklist for DSM-5 (PCL-5), the general depression subscale and anxiety subscale from the self-report Inventory of Depression and Anxiety Symptoms (IDAS), the Inventory of Psychosocial Functioning, and the Insomnia Severity Index. 

Outcomes

• Six participants did not continue to Stage 2. Three participants did not finish Stage 2 due to adverse effects, and 7 did not complete outcome measurements. The overall attrition rate was 16.3%. 
• There was no significant difference in total grams of smoked cannabis or placebo between the 4 treatment groups in Stage 1 at the end of 3 weeks. In Stage 2, there was a significant difference, with the THC+CBD group using more cannabis compared to the other 2 groups. 
• Each of the 4 groups had significant reductions in total CAPS-5 scores at the end of Stage 1, and there was no significant difference in CAPS-5 severity scores between the 4 groups.
• In Stage 1, PCL-5 scores were not significantly different between treatment groups from baseline to the end of stage. There was a significant difference in Stage 2 between the high CBD and THC+CBD groups, with the combined group reporting greater improvement of symptoms. 
• In Stage 2, the THC+CBD group reported greater reductions in pre/post IDAS social anxiety scores and IDAS general depression scores, and the high THC group reported greater reductions in pre/post IDAS social anxiety scores. 
• In Stage 1, 37 of 60 participants in the active groups reported at least 1 adverse event, and 45 of the 74 Stage 2 participants reported at least 1 adverse event. The most common adverse events were cough, throat irritation, and anxiety. Participants in the Stage 1 high THC group had a significant increase in reported withdrawal symptoms after 1 week of stopping use.  

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• This first randomized, placebo-control trial of cannabis in US veterans did not show a significant difference among treatment groups, including placebo, on the primary outcome of CAPS-5 score. All 4 groups had significant reductions in symptom severity on CAPS-5 and showed good tolerability.
• Prior beliefs about the effects of cannabis may have played a role in the reduction of PTSD symptoms in the placebo group.
• Many participants (n =34) were positive for THC during the screening process, so previous cannabis use/chronicity of cannabis use may have contributed.
• One limitation was that participants assigned to the Stage 1 high THC group had Cannabis Use Disorders Identification Test scores (which assesses cannabis use disorder risk) about 2 times greater than participants in other conditions.
• Another limitation was that total cannabis use was lower than expected, as participants in Stage 1 used 8.2 g to 14.6 g over 3 weeks, though they had access to up to 37.8 g. 
• There was no placebo in Stage 2.
• Future studies should look at longer treatment periods with more participants.

7. Youngstedt SD, Kline CE, Reynolds AM, et al. Bright light treatment of combat-related PTSD: a randomized controlled trial. Milit Med. 2022;187(3-4):e435-e444

Bright light therapy is an inexpensive treatment approach that may affect serotonergic pathways.¹⁶ This study examined bright light therapy for reducing PTSD symptoms and examined if improvement of PTSD is related to a shift in circadian rhythm.¹³  

Study design

• Veterans with combat-related PTSD had to have been stable on treatment for at least 8 weeks or to have not received any other PTSD treatments prior to the study.
• Participants were randomized to active treatment of 30 minutes daily 10,000 lux ultraviolet-filtered white light while sitting within 18 inches (n = 34) or a control condition of 30 minutes daily inactivated negative ion generator (n = 35) for 4 weeks.
• Inclusion criteria included a CAPS score ≥30.
•  Exclusion criteria included high suicidality, high probability of alcohol/substance abuse in the past 3 months, bipolar disorder/mania/schizophrenia/psychosis, ophthalmologic deformities, shift work in past 2 months or travel across time zones in past 2 weeks, head trauma, high outdoor light exposure, history of winter depression, history of seizures, or myocardial infarction/stroke/cancer within 3 years.
• Primary outcomes were improvement on CAPS and Clinical Global Impressions-Improvement scale (CGI-IM) score at Week 4.
• Wrist actigraphy recordings measured sleep.
• Other measurements included the Hamilton Depression Rating Scale (HAM-D), Hamilton atypical symptoms (HAM-AS), PCL-Military (PCL-M), Pittsburg Sleep Quality Index (PSQI), BDI, Spielberger State-Trait Anxiety Inventory (STAI Form Y-2), Beck Suicide Scale, and Systematic Assessment for Treatment Emergent Effects questionnaire.

Outcomes

• There was a significant decrease in CAPS score in participants who received bright light therapy compared to controls. Treatment response (defined as ≥33% reduction in score) was significantly greater in the bright light (44%) vs control (8.6%) group. No participants achieved remission. 
• There was a significant improvement in CGI-IM scores in the bright light group, but no significant difference in participants who were judged to improve “much” or “very much.”
• PCL-M scores did not change significantly between groups, although a significantly greater proportion of participants had treatment response in the bright light group (33%) vs control (6%).
• There were no significant changes in HAM-D, HAM-AS, STAI, BDI, actigraphic estimates of sleep, or PSQI scores. 
• Bright light therapy resulted in phase advancement while control treatment had phase delay. 
• There were no significant differences in adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Bright light therapy may be a treatment option or adjunct for combat-related PTSD as seen by improvement on CAPS and CGI scores, as well as a greater treatment response seen on CAPS and PCL-5 scores in the bright light group.  
• There was no significant difference for other measures, including depression, anxiety, and sleep.  
• Limitations include excluding patients with a wide variety of medical or psychiatric comorbidities, as well as limited long-term follow up data.  
• Other limitations include not knowing the precise amount of time participants stayed in front of the light device and loss of some actigraphic data (data from only 49 of 69 participants).  

8. Peterson AL, Mintz J, Moring JC, et al. In-office, in-home, and telehealth cognitive processing therapy for posttraumatic stress disorder in veterans: a randomized clinical trial. BMC Psychiatry. 2022;22(1):41 doi:10.1186/s12888-022-03699-4

Cognitive processing therapy (CPT), a type of trauma-focused psychotherapy, is an effective treatment for PTSD in the military population.^17,18 However, patients may not be able to or want to participate in such therapy due to barriers such as difficulty arranging transportation, being homebound due to injury, concerns about COVID-19, stigma, familial obligations, and job constraints. This study looked at if CPT delivered face-to-face at the patient’s home or via telehealth in home would be effective and increase accessibility.¹⁴  

Study design

• Participants (n = 120) were active-duty military and veterans who met DSM-5 criteria for PTSD. They were randomized to receive CPT in the office, in their home, or via telehealth. Participants could choose not to partake in 1 modality but were then randomized to 1 of the other 2. 
• Exclusion criteria included suicide/homicide risk needing intervention, items/situations pertaining to danger (ie, aggressive pet or unsafe neighborhood), significant alcohol/substance use, active psychosis, and impaired cognitive functioning. 
• The primary outcome measurement was change in PCL-5 and CAPS-5 score over 6 months. The BDI-II was used to assess depressive symptoms.  
• Secondary outcomes included the Reliable Change Index (defined as “an improvement of 10 or more points that was sustained at all subsequent assessments”) on the PCL-5 and remission on the CAPS-5.
• CPT was delivered in 60-minute sessions twice a week for 6 weeks. Participants who did not have electronic resources were loaned a telehealth apparatus. 

Outcomes

• Overall, 57% of participants opted out of 1 modality, which resulted in fewer participants being placed into the in-home arm (n = 32). Most participants chose not to do in-home treatments (54%), followed by in-office (29%), and telehealth (17%). 
• There was a significant posttreatment improvement in PCL-5 scores in all treatment arms, with improvement greater with in-home (d = 2.1) and telehealth (d = 2.0) vs in-office (d=1.3). The in-home and telehealth scores were significantly improved compared to in-office, and the difference between in-home and telehealth PCL-5 scores was minimal.
• At 6 months posttreatment, the differences between the 3 treatment groups on PCL-5 score were negligible. 
• CAPS-5 scores were significantly improved in all treatment arms, with improvement largest with in-home treatment; however, the differences between the groups were not significant.  
• BDI-II scores improved in all modalities but were larger in the in-home (d = 1.2) and telehealth (d = 1.1) arms than the in-office arm (d = 0.52). 
• Therapist time commitment was greater for the in-home and in-office arms (2 hours/session) than the telehealth arm (1 hour/session). This difference was due to commuting time for the patient or therapist.
• The dropout rate was not statistically significant between the groups.
• Adverse events did not significantly differ per group. The most commonly reported ones included nightmares, sleep difficulty, depression, anxiety, and irritability.

Conclusions/limitations

• Patients undergoing CPT had significant improvement in PTSD symptoms, with posttreatment PCL-5 improvement approximately twice as large in those who received the in-home and telehealth modalities vs in-office treatment. 
• The group differences were not seen on CAPS-5 scores at posttreatment, or PCL-5 or CAPS-5 scores at 6 months posttreatment.  
• In-home CPT was declined the most, which suggests that in-home distractions or the stigma of a mental health clinician being in their home played a role in patients’ decision-making. However, in-home CPT produced the greatest amount of improvement in PTSD symptoms. The authors concluded that in-home therapy should be reserved for those who are homebound or have travel limitations.  
• This study shows evidence that telehealth may be a good modality for CPT, as seen by improvement in PTSD symptoms and good acceptability and retention. 
• Limitations include more patients opting out of in-home CPT, and reimbursement for travel may not be available in the real-world setting.  

Posttraumatic stress disorder (PTSD) is a chronic and disabling psychiatric disorder. The lifetime prevalence among American adults is 6.8%.¹ Management of PTSD includes treating distressing symptoms, reducing avoidant behaviors, treating comorbid conditions (eg, depression, substance use disorders, or mood dysregulation), and improving adaptive functioning, which includes restoring a psychological sense of safety and trust. PTSD can be treated using evidence-based psychotherapies, pharmacotherapy, or a combination of both modalities. For adults, evidence-based treatment guidelines recommend the use of cognitive-behavioral therapy, cognitive processing therapy, cognitive therapy, and prolonged exposure therapy.² These guidelines also recommend (with some reservations) the use of brief eclectic psychotherapy, eye movement desensitization and reprocessing, and narrative exposure therapy.² Although the evidence base for the use of medications is not as strong as that for the psychotherapies listed above, the guidelines recommend the use of fluoxetine, paroxetine, sertraline, and venlafaxine.²

Currently available treatments for PTSD have significant limitations. For example, trauma-focused psychotherapies can have significant rates of nonresponse, partial response, or treatment dropout.^3,4 Additionally, such therapies are not widely accessible. As for pharmacotherapy, very few available options are supported by evidence, and the efficacy of these options is limited, as shown by the reports that only 60% of patients with PTSD show a response to selective serotonin reuptake inhibitors (SSRIs), and only 20% to 30% achieve complete remission.⁵ Additionally, it may take months for patients to achieve an acceptable level of improvement with medications. As a result, a substantial proportion of patients who seek treatment continue to remain symptomatic, with impaired levels of functioning. This lack of progress in PTSD treatment has been labeled as a national crisis, calling for an urgent need to find effective pharmacologic treatments for PTSD.⁶

In this article, we review 8 randomized controlled trials (RCTs) of treatments for PTSD published within the last 5 years (Table^7-14).

1. Feder A, Costi S, Rutter SB, et al. A randomized controlled trial of repeated ketamine administration for chronic posttraumatic stress disorder. Am J Psychiatry. 2021;178(2):193-202

Feder et al had previously found a significant and quick decrease in PTSD symptoms after a single dose of IV ketamine had. This is the first RCT to examine the effectiveness and safety of repeated IV ketamine infusions for the treatment of persistent PTSD.⁷ 

Study design

• This randomized, double-blind, parallel-arm controlled trial treated 30 individuals with chronic PTSD with 6 infusions of either ketamine (0.5 mg/kg) or midazolam (0.045 mg/kg) over 2 consecutive weeks. 
• Participants were individuals age 18 to 70 with a primary diagnosis of chronic PTSD according to the DSM-5 criteria and determined by The Structure Clinical Interview for DSM-5, with a score ≥30 on the Clinician-Administered PTSD Scale for DSM-5 (CAPS-5).  
• Any severe or unstable medical condition, active suicidal or homicidal ideation, lifetime history of psychotic or bipolar disorder, current anorexia nervosa or bulimia, alcohol or substance use disorder within 3 months of screening, history of recreational ketamine or phencyclidine use on more than 1 occasion or any use in the previous 2 years, and ongoing treatment with a long-acting benzodiazepine or opioid medication were all considered exclusion criteria. Individuals who took short-acting benzodiazepines had their morning doses held on infusion days. Marijuana or cannabis derivatives were allowed. 
• The primary outcome measure was a change in PTSD symptom severity as measured with CAPS-5. This was administered before the first infusion and weekly thereafter. The Impact of Event Scale-Revised, the Montgomery–Åsberg Depression Rating Scale, and adverse effect measurements were used as secondary outcome measures. 
• Treatment response was defined as ≥30% symptom improvement 2 weeks after the first infusion as assessed with CAPS-5. 
• Individuals who responded to treatment were followed naturalistically weekly for up to 4 weeks and then monthly until loss of responder status, or up to 6 months if there was no loss of response. 

Outcomes

• At the second week, the mean CAPS-5 total score in the ketamine group was 11.88 points (SE = 3.96) lower than in the midazolam group (d = 1.13; 95% CI, 0.36 to 1.91).  
• In the ketamine group, 67% of patients responded to therapy, compared to 20% in the midazolam group.  
• Following the 2-week course of infusions, the median period until loss of response among ketamine responders was 27.5 days.  
• Ketamine infusions showed good tolerability and safety. There were no clinically significant adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Repeated ketamine infusions are effective in reducing symptom severity in individuals with chronic PTSD. 
• Limitations to this study include the exclusion of individuals with comorbid bipolar disorder, current alcohol or substance use disorder, or suicidal ideations, the small sample size, and a higher rate of transient dissociative symptoms in the ketamine group. 
• Future studies could evaluate the efficacy of repeated ketamine infusions in individuals with treatment-resistant PTSD. Also, further studies are required to assess the efficacy of novel interventions to prevent relapse and evaluate the efficacy, safety, and tolerability of periodic IV ketamine use as maintenance.  
• Additional research might determine whether pairing psychotherapy with ketamine administration can lessen the risk of recurrence for PTSD patients after stopping ketamine infusions. 

2. Rauch SAM, Kim HM, Powell C, et al. Efficacy of prolonged exposure therapy, sertraline hydrochloride, and their combination among combat veterans with posttraumatic stress disorder: a randomized clinical trial. JAMA Psychiatry. 2019;76(2):117-126

Clinical practice recommendations for PTSD have identified trauma-focused psychotherapies and SSRIs as very effective treatments. The few studies that have compared trauma-focused psychotherapy to SSRIs or to a combination of treatments are not generalizable, have significant limitations, or are primarily concerned with refractory disorders or augmentation techniques. This study evaluated the efficacy of prolonged exposure therapy (PE) plus placebo, PE plus sertraline, and sertraline plus enhanced medication management in the treatment of PTSD.⁸ 

Study design

• This randomized, 4-site, 24-week clinical trial divided participants into 3 subgroups: PE plus placebo, PE plus sertraline, and sertraline plus enhanced medication management. 
• Participants were veterans or service members of the Iraq and/or Afghanistan wars with combat-related PTSD and significant impairment as indicated by a CAPS score ≥50 for at least 3 months. The DSM-IV-TR version of CAPS was used because the DSM-5 version was not available at the time of the study.
• Individuals who had a current, imminent risk of suicide; active psychosis; alcohol or substance dependence in the past 8 weeks; inability to attend weekly appointments for the treatment period; prior intolerance to or failure of an adequate trial of PE or sertraline; medical illness likely to result in hospitalization or contraindication to study treatment; serious cognitive impairment; mild traumatic brain injury; or concurrent use of antidepressants, antipsychotics, benzodiazepines, prazosin, or sleep agents were excluded. 
• Participants completed up to thirteen 90-minute sessions of PE. 
• The sertraline dosage was titrated during a 10-week period and continued until Week 24. Dosages were adjusted between 50 and 200 mg/d, with the last dose increase at Week 10. 
• The primary outcome measure was symptom severity of PTSD in the past month as determined by CAPS score at Week 24.
• The secondary outcome was self-reported symptoms of PTSD (PTSD checklist [PCL] Specific Stressor Version), clinically meaningful change (reduction of ≥20 points or score ≤35 on CAPS), response (reduction of ≥50% in CAPS score), and remission (CAPS score ≤35). 

Outcomes

• At Week 24, 149 participants completed the study; 207 were included in the intent-to-treat analysis. 
• PTSD symptoms significantly decreased over 24 weeks, according to a modified intent-to-treat analysis utilizing a mixed model of repeated measurements; nevertheless, slopes were similar across therapy groups. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• Although the severity of PTSD symptoms decreased in all 3 subgroups, there was no difference in PTSD symptom severity or change in symptoms at Week 24 among all 3 subgroups.  
• The main limitation of this study was the inclusion of only combat veterans. 
• Further research should focus on enhancing treatment retention and should include administering sustained exposure therapy at brief intervals. 

3. Lehrner A, Hildebrandt T, Bierer LM, et al. A randomized, double-blind, placebo-controlled trial of hydrocortisone augmentation of prolonged exposure for PTSD in US combat veterans. Behav Res Ther. 2021;144:103924

First-line therapy for PTSD includes cognitive-behavioral therapies such as PE. However, because many people still have major adverse effects after receiving medication, improving treatment efficacy is a concern. Glucocorticoids promote extinction learning, and alterations in glucocorticoid signaling pathways have been associated with PTSD. Lehrner et al previously showed that adding hydrocortisone (HCORT) to PE therapy increased patients’ glucocorticoid sensitivity at baseline, improved treatment retention, and resulted in greater treatment improvements. This study evaluated HCORT in conjunction with PE for combat veterans with PTSD following deployment to Iraq and Afghanistan.⁹ 

Study design

• This randomized, double-blind, placebo-controlled trial administered HCORT 30 mg oral or placebo to 96 combat veterans 30 minutes before PE sessions.  
• Participants were veterans previously deployed to Afghanistan or Iraq with deployment-related PTSD >6 months with a minimum CAPS score of 60. They were unmedicated or on a stable psychotropic regimen for ≥4 weeks. 
• Exclusion criteria included a lifetime history of a primary psychotic disorder (bipolar I disorder or obsessive-compulsive disorder), medical or mental health condition other than PTSD that required immediate clinical attention, moderate to severe traumatic brain injury (TBI), substance abuse or dependence within the past 3 months, medical illness that contraindicated ingestion of hydrocortisone, acute suicide risk, and pregnancy or intent to become pregnant. 
• The primary outcome measures included PTSD severity as assessed with CAPS. 
• Secondary outcome measures included self-reported PTSD symptoms as assessed with the Posttraumatic Diagnostic Scale (PDS) and depression as assessed with the Beck Depression Inventory-II (BDI). These scales were administered pretreatment, posttreatment, and at 3-months follow-up. 

Outcomes

• Out of 96 veterans enrolled, 60 were randomized and 52 completed the treatment.  
• Five participants were considered recovered early and completed <12 sessions.
• Of those who completed treatment, 50 completed the 1-week posttreatment evaluations and 49 completed the 3-month follow-up evaluation.
• There was no difference in the proportion of dropouts (13.33%) across the conditions.
• HCORT failed to significantly improve either secondary outcomes or PTSD symptoms, according to an intent-to-treat analysis.
• However, exploratory analyses revealed that veterans with recent post-concussive symptoms and moderate TBI exposure saw a larger decrease in hyperarousal symptoms after PE therapy with HCORT augmentation.  
• The reduction in avoidance symptoms with HCORT augmentation was also larger in veterans with higher baseline glucocorticoid sensitivity. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• HCORT does not improve PTSD symptoms as assessed with the CAPS and PDS, or depression as assessed with the BDI. 
• The main limitation of this study is generalizability. 
• Further studies are needed to determine whether PE with HCORT could benefit veterans with indicators of enhanced glucocorticoid sensitivity, mild TBI, or postconcussive syndrome. 

4. Inslicht SS, Niles AN, Metzler TJ, et al. Randomized controlled experimental study of hydrocortisone and D-cycloserine effects on fear extinction in PTSD. Neuropsychopharmacology. 2022;47(11):1945-1952

PE, one of the most well-researched therapies for PTSD, is based on fear extinction. Exploring pharmacotherapies that improve fear extinction learning and their potential as supplements to PE is gaining increased attention. Such pharmacotherapies aim to improve the clinical impact of PE on the extent and persistence of symptom reduction. This study evaluated the effects of HCORT and D-cycloserine (DCS), a partial agonist of the N-methyl-D-aspartate (NMDA) receptor, on the learning and consolidation of fear extinction in patients with PTSD.¹⁰ 

Study design

• This double-blind, placebo-controlled, 3-group experimental design evaluated 90 individuals with PTSD who underwent fear conditioning with stimuli that was paired (CS+) or unpaired (CS−) with shock. 
• Participants were veterans and civilians age 18 to 65 recruited from VA outpatient and community clinics and internet advertisements who met the criteria for PTSD or subsyndromal PTSD (according to DSM-IV criteria) for at least 3 months. 
• Exclusion criteria included schizophrenia, bipolar disorder, substance abuse or dependence, alcohol dependence, previous moderate or severe head injury, seizure or neurological disorder, current infectious illness, systemic illness affecting CNS function, or other conditions known to affect psychophysiological responses. Excluded medications were antipsychotics, mood stabilizers, alpha- and beta-adrenergics, benzodiazepines, anticonvulsants, antihypertensives, sympathomimetics, anticholinergics, and steroids.  
• Extinction learning took place 72 hours after extinction, and extinction retention was evaluated 1 week later. Placebo, HCORT 25 mg, or DCS 50 mg was given 1 hour before extinction learning. 
• Clinical measures included PTSD diagnosis and symptom levels as determined by interview using CAPS and skin conduction response. 

Outcomes

• The mean shock level, mean pre-stimulus skin conductance level (SCL) during habituation, and mean SC orienting response during the habituation phase did not differ between groups and were not associated with differential fear conditioning. Therefore, variations in shock level preference, resting SCL, or SC orienting response magnitude are unlikely to account for differences between groups during extinction learning and retention.
• During extinction learning, the DCS and HCORT groups showed a reduced differential CS+/CS− skin conductance response (SCR) compared to placebo. 
• One week later, during the retention testing, there was a nonsignificant trend toward a smaller differential CS+/CS− SCR in the DCS group compared to placebo. HCORT and DCS administered as a single dosage facilitated fear extinction learning in individuals with PTSD symptoms. 

Continue to: Conclusions/limitations

Conclusions/limitations 

• In traumatized people with PTSD symptoms, a single dosage of HCORT or DCS enhanced the learning of fear extinction compared to placebo. A nonsignificant trend toward better extinction retention in the DCS group but not the HCORT group was also visible. 
• These results imply that glucocorticoids and NMDA agonists have the potential to promote extinction learning in PTSD. 
• Limitations include a lack of measures of glucocorticoid receptor sensitivity or FKBP5. 
• Further studies could evaluate these findings with the addition of blood biomarker measures such as glucocorticoid receptor sensitivity or FKBP5.  

5. Mitchell JM, Bogenschutz M, Lilienstein A, et al. MDMA-assisted therapy for severe PTSD: a randomized, double-blind, placebo-controlled phase 3 study. Nat Med. 2021;27(6):1025-1033. doi:10.1038/s41591-021-01336-3

Poor PTSD treatment results are associated with numerous comorbid conditions, such as dissociation, depression, alcohol and substance use disorders, childhood trauma, and suicidal ideation, which frequently leads to treatment resistance. Therefore, it is crucial to find a treatment that works for individuals with PTSD who also have comorbid conditions. In animal models, 3,4-methylenedioxymethamphetamine (MDMA), an empathogen/entactogen with stimulant properties, has been shown to enhance fear memory extinction and modulate fear memory reconsolidation. This study evaluated the efficacy and safety of MDMA-assisted therapy for treating patients with severe PTSD, including those with common comorbidities.¹¹ 

Study design

• This randomized, double-blind, placebo-controlled, multi-site, phase 3 clinical trial evaluated individuals randomized to receive manualized therapy with MDMA or with placebo, combined with 3 preparatory and 9 integrative therapy sessions.  
• Participants were 90 individuals (46 randomized to MDMA and 44 to placebo) with PTSD with a symptom duration ≥6 months and CAPS-5 total severity score ≥35 at baseline. 
• Exclusion criteria included primary psychotic disorder, bipolar I disorder, eating disorders with active purging, major depressive disorder with psychotic features, dissociative identity disorder, personality disorders, current alcohol and substance use disorders, lactation or pregnancy, and any condition that could make receiving a sympathomimetic medication dangerous due to hypertension or tachycardia, including uncontrolled hypertension, history of arrhythmia, or marked baseline prolongation of QT and/or QTc interval. 
• Three 8-hour experimental sessions of either therapy with MDMA assistance or therapy with a placebo control were given during the treatment period, and they were spaced approximately 4 weeks apart. 
• In each session, participants received placebo or a single divided dose of MDMA 80 to 180 mg. 
• At baseline and 2 months after the last experimental sessions, PTSD symptoms were measured with CAPS-5, and functional impairment was measured with Sheehan Disability Scale (SDS). 
• The primary outcome measure was CAPS-5 total severity score at 18 weeks compared to baseline for MDMA-assisted therapy vs placebo-assisted therapy. 
• The secondary outcome measure was clinician-rated functional impairment using the mean difference in SDS total scores from baseline to 18 weeks for MDMA-assisted therapy vs placebo-assisted therapy. 

Outcomes

• MDMA was found to induce significant and robust attenuation in CAPS-5 score compared to placebo. 
• The mean change in CAPS-5 score in completers was –24.4 in the MDMA group and –13.9 in the placebo group. 
• MDMA significantly decreased the SDS total score. 
• MDMA did not induce suicidality, misuse, or QT prolongation. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• MDMA-assisted therapy is significantly more effective than manualized therapy with placebo in treating patients with severe PTSD, and it is also safe and well-tolerated, even in individuals with comorbidities. 
• No major safety issues were associated with MDMA-assisted treatment. 
• MDMA-assisted therapy should be promptly assessed for clinical usage because it has the potential to significantly transform the way PTSD is treated. 
• Limitations of this study include a smaller sample size (due to the COVID-19 pandemic); lack of ethnic and racial diversity; short duration; safety data were collected by site therapist, which limited the blinding; and the blinding of participants was difficult due to the subjective effects of MDMA, which could have resulted in expectation effects. 

6. Bonn-Miller MO, Sisley S, Riggs P, et al. The short-term impact of 3 smoked cannabis preparations versus placebo on PTSD symptoms: a randomized cross-over clinical trial. PLoS One. 2021;16(3):e0246990

Sertraline and paroxetine are the only FDA-approved medications for treating PTSD. Some evidence suggests cannabis may provide a therapeutic benefit for PTSD.¹⁵ This study examined the effects of 3 different preparations of cannabis for treating PTSD symptoms.¹²  

Study design

• This double-blind, randomized, placebo-controlled, crossover trial used 3 active treatment groups of cannabis: high delta-9-tetrahydrocannabinol (THC)/low cannabidiol (CBD), high CBD/low THC, and high THC/high CBD (THC+CBD). A low THC/low CBD preparation was used as a placebo. “High” content contained 9% to 15% concentration by weight of the respective cannabinoid, and “low” content contained <2% concentration by weight.  
• Inclusion criteria included being a US military veteran, meeting DSM-5 PTSD criteria for ≥6 months, having moderate symptom severity (CAPS-5 score ≥25), abstaining from cannabis 2 weeks prior to study and agreeing not to use any non-study cannabis during the trial, and being stable on medications/therapy prior to the study.  
• Exclusion criteria included women who were pregnant/nursing/child-bearing age and not taking an effective means of birth control; current/past serious mental illness, including psychotic and personality disorders; having a first-degree relative with a psychotic or bipolar disorder; having a high suicide risk based on Columbia-Suicide Severity Rating Scale; meeting DSM-5 criteria for moderate-severe cannabis use disorder; screening positive for illicit substances; or having significant medical disease.  
• Participants in Stage 1 (n = 80) were randomized to 1 of the 3 active treatments or placebo for 3 weeks. After a 2-week washout, participants in Stage 2 (n = 74) were randomized to receive for 3 weeks 1 of the 3 active treatments they had not previously received.
• During each stage, participants had ad libitum use for a maximum of 1.8 g/d. 
• The primary outcome was change in PTSD symptom severity by the end of Stage 1 as assessed with CAPS-5.
• Secondary outcomes included the PTSD Checklist for DSM-5 (PCL-5), the general depression subscale and anxiety subscale from the self-report Inventory of Depression and Anxiety Symptoms (IDAS), the Inventory of Psychosocial Functioning, and the Insomnia Severity Index. 

Outcomes

• Six participants did not continue to Stage 2. Three participants did not finish Stage 2 due to adverse effects, and 7 did not complete outcome measurements. The overall attrition rate was 16.3%. 
• There was no significant difference in total grams of smoked cannabis or placebo between the 4 treatment groups in Stage 1 at the end of 3 weeks. In Stage 2, there was a significant difference, with the THC+CBD group using more cannabis compared to the other 2 groups. 
• Each of the 4 groups had significant reductions in total CAPS-5 scores at the end of Stage 1, and there was no significant difference in CAPS-5 severity scores between the 4 groups.
• In Stage 1, PCL-5 scores were not significantly different between treatment groups from baseline to the end of stage. There was a significant difference in Stage 2 between the high CBD and THC+CBD groups, with the combined group reporting greater improvement of symptoms. 
• In Stage 2, the THC+CBD group reported greater reductions in pre/post IDAS social anxiety scores and IDAS general depression scores, and the high THC group reported greater reductions in pre/post IDAS social anxiety scores. 
• In Stage 1, 37 of 60 participants in the active groups reported at least 1 adverse event, and 45 of the 74 Stage 2 participants reported at least 1 adverse event. The most common adverse events were cough, throat irritation, and anxiety. Participants in the Stage 1 high THC group had a significant increase in reported withdrawal symptoms after 1 week of stopping use.  

Continue to: Conclusions/limitations

 

 

Conclusions/limitations 

• This first randomized, placebo-control trial of cannabis in US veterans did not show a significant difference among treatment groups, including placebo, on the primary outcome of CAPS-5 score. All 4 groups had significant reductions in symptom severity on CAPS-5 and showed good tolerability.
• Prior beliefs about the effects of cannabis may have played a role in the reduction of PTSD symptoms in the placebo group.
• Many participants (n =34) were positive for THC during the screening process, so previous cannabis use/chronicity of cannabis use may have contributed.
• One limitation was that participants assigned to the Stage 1 high THC group had Cannabis Use Disorders Identification Test scores (which assesses cannabis use disorder risk) about 2 times greater than participants in other conditions.
• Another limitation was that total cannabis use was lower than expected, as participants in Stage 1 used 8.2 g to 14.6 g over 3 weeks, though they had access to up to 37.8 g. 
• There was no placebo in Stage 2.
• Future studies should look at longer treatment periods with more participants.

7. Youngstedt SD, Kline CE, Reynolds AM, et al. Bright light treatment of combat-related PTSD: a randomized controlled trial. Milit Med. 2022;187(3-4):e435-e444

Bright light therapy is an inexpensive treatment approach that may affect serotonergic pathways.¹⁶ This study examined bright light therapy for reducing PTSD symptoms and examined if improvement of PTSD is related to a shift in circadian rhythm.¹³  

Study design

• Veterans with combat-related PTSD had to have been stable on treatment for at least 8 weeks or to have not received any other PTSD treatments prior to the study.
• Participants were randomized to active treatment of 30 minutes daily 10,000 lux ultraviolet-filtered white light while sitting within 18 inches (n = 34) or a control condition of 30 minutes daily inactivated negative ion generator (n = 35) for 4 weeks.
• Inclusion criteria included a CAPS score ≥30.
•  Exclusion criteria included high suicidality, high probability of alcohol/substance abuse in the past 3 months, bipolar disorder/mania/schizophrenia/psychosis, ophthalmologic deformities, shift work in past 2 months or travel across time zones in past 2 weeks, head trauma, high outdoor light exposure, history of winter depression, history of seizures, or myocardial infarction/stroke/cancer within 3 years.
• Primary outcomes were improvement on CAPS and Clinical Global Impressions-Improvement scale (CGI-IM) score at Week 4.
• Wrist actigraphy recordings measured sleep.
• Other measurements included the Hamilton Depression Rating Scale (HAM-D), Hamilton atypical symptoms (HAM-AS), PCL-Military (PCL-M), Pittsburg Sleep Quality Index (PSQI), BDI, Spielberger State-Trait Anxiety Inventory (STAI Form Y-2), Beck Suicide Scale, and Systematic Assessment for Treatment Emergent Effects questionnaire.

Outcomes

• There was a significant decrease in CAPS score in participants who received bright light therapy compared to controls. Treatment response (defined as ≥33% reduction in score) was significantly greater in the bright light (44%) vs control (8.6%) group. No participants achieved remission. 
• There was a significant improvement in CGI-IM scores in the bright light group, but no significant difference in participants who were judged to improve “much” or “very much.”
• PCL-M scores did not change significantly between groups, although a significantly greater proportion of participants had treatment response in the bright light group (33%) vs control (6%).
• There were no significant changes in HAM-D, HAM-AS, STAI, BDI, actigraphic estimates of sleep, or PSQI scores. 
• Bright light therapy resulted in phase advancement while control treatment had phase delay. 
• There were no significant differences in adverse effects. 

Continue to: Conclusions/limitations

 

 

Conclusions/limitations

• Bright light therapy may be a treatment option or adjunct for combat-related PTSD as seen by improvement on CAPS and CGI scores, as well as a greater treatment response seen on CAPS and PCL-5 scores in the bright light group.  
• There was no significant difference for other measures, including depression, anxiety, and sleep.  
• Limitations include excluding patients with a wide variety of medical or psychiatric comorbidities, as well as limited long-term follow up data.  
• Other limitations include not knowing the precise amount of time participants stayed in front of the light device and loss of some actigraphic data (data from only 49 of 69 participants).  

8. Peterson AL, Mintz J, Moring JC, et al. In-office, in-home, and telehealth cognitive processing therapy for posttraumatic stress disorder in veterans: a randomized clinical trial. BMC Psychiatry. 2022;22(1):41 doi:10.1186/s12888-022-03699-4

Cognitive processing therapy (CPT), a type of trauma-focused psychotherapy, is an effective treatment for PTSD in the military population.^17,18 However, patients may not be able to or want to participate in such therapy due to barriers such as difficulty arranging transportation, being homebound due to injury, concerns about COVID-19, stigma, familial obligations, and job constraints. This study looked at if CPT delivered face-to-face at the patient’s home or via telehealth in home would be effective and increase accessibility.¹⁴  

Study design

• Participants (n = 120) were active-duty military and veterans who met DSM-5 criteria for PTSD. They were randomized to receive CPT in the office, in their home, or via telehealth. Participants could choose not to partake in 1 modality but were then randomized to 1 of the other 2. 
• Exclusion criteria included suicide/homicide risk needing intervention, items/situations pertaining to danger (ie, aggressive pet or unsafe neighborhood), significant alcohol/substance use, active psychosis, and impaired cognitive functioning. 
• The primary outcome measurement was change in PCL-5 and CAPS-5 score over 6 months. The BDI-II was used to assess depressive symptoms.  
• Secondary outcomes included the Reliable Change Index (defined as “an improvement of 10 or more points that was sustained at all subsequent assessments”) on the PCL-5 and remission on the CAPS-5.
• CPT was delivered in 60-minute sessions twice a week for 6 weeks. Participants who did not have electronic resources were loaned a telehealth apparatus. 

Outcomes

• Overall, 57% of participants opted out of 1 modality, which resulted in fewer participants being placed into the in-home arm (n = 32). Most participants chose not to do in-home treatments (54%), followed by in-office (29%), and telehealth (17%). 
• There was a significant posttreatment improvement in PCL-5 scores in all treatment arms, with improvement greater with in-home (d = 2.1) and telehealth (d = 2.0) vs in-office (d=1.3). The in-home and telehealth scores were significantly improved compared to in-office, and the difference between in-home and telehealth PCL-5 scores was minimal.
• At 6 months posttreatment, the differences between the 3 treatment groups on PCL-5 score were negligible. 
• CAPS-5 scores were significantly improved in all treatment arms, with improvement largest with in-home treatment; however, the differences between the groups were not significant.  
• BDI-II scores improved in all modalities but were larger in the in-home (d = 1.2) and telehealth (d = 1.1) arms than the in-office arm (d = 0.52). 
• Therapist time commitment was greater for the in-home and in-office arms (2 hours/session) than the telehealth arm (1 hour/session). This difference was due to commuting time for the patient or therapist.
• The dropout rate was not statistically significant between the groups.
• Adverse events did not significantly differ per group. The most commonly reported ones included nightmares, sleep difficulty, depression, anxiety, and irritability.

Conclusions/limitations

• Patients undergoing CPT had significant improvement in PTSD symptoms, with posttreatment PCL-5 improvement approximately twice as large in those who received the in-home and telehealth modalities vs in-office treatment. 
• The group differences were not seen on CAPS-5 scores at posttreatment, or PCL-5 or CAPS-5 scores at 6 months posttreatment.  
• In-home CPT was declined the most, which suggests that in-home distractions or the stigma of a mental health clinician being in their home played a role in patients’ decision-making. However, in-home CPT produced the greatest amount of improvement in PTSD symptoms. The authors concluded that in-home therapy should be reserved for those who are homebound or have travel limitations.  
• This study shows evidence that telehealth may be a good modality for CPT, as seen by improvement in PTSD symptoms and good acceptability and retention. 
• Limitations include more patients opting out of in-home CPT, and reimbursement for travel may not be available in the real-world setting.  

A brief aerobic exercise intervention can augment the benefits of exposure therapy for PTSD, new research suggests.

Investigators randomly assigned individuals with PTSD to receive either exposure therapy with aerobic exercise or exposure therapy with passive stretching for 9 weeks. At 6 months post intervention, participants in the aerobic exercise group showed greater reductions in PTSD severity, compared with those in the stretching group.

“There is a critical need to improve outcomes for treating people with PTSD, and this finding points to one potentially cheap and ready-to-use strategy that all clinicians could employ with most patients,” lead author Richard Bryant, MPsych, PhD, DSc, director of the Traumatic Stress Clinic and Scientia Professor of Psychology at the University of New South Wales, Sydney, told this news organization.

The study was published online in The Lancet Psychiatry.
 

Promoting BDNF

“Trauma-focused psychotherapy is the recommended treatment for PTSD, but up to half of patients do not respond to this treatment,” Dr. Bryant said.

“We know that brain-derived neurotrophic factors [BDNF] are critical for synaptic plasticity, which underpins the learning that occurs in therapy so that reminders of trauma are no longer fear-provoking,” he continued. “Preclinical animal and human research inform us that brief aerobic exercise can promote BDNF and new learning that inhibits fear responses.”

The researchers “hypothesized that brief exercise after exposure therapy to trauma memories – which is the key ingredient of trauma-focused psychotherapy – would lead to greater reductions in PTSD, relative to standard trauma-focused therapy,” he said.

To investigate the question, the researchers randomly assigned 130 adults with PTSD (mean age, 39 years; 61% female; 76% White) to receive nine 90-minute sessions of exposure therapy with either aerobic exercise or passive stretching (n = 65 in each group).

There were no differences at baseline in sociodemographic characteristics or psychopathology measures, although the mean age of the stretching group was slightly older than that of the aerobic group (40 years vs. 37 years, respectively), and there was a slightly higher proportion of women in the stretching group (68% vs. 54%).

Participants did not differ on weekly exercise either at baseline, immediately post treatment, or at 6-week follow-up.

PTSD severity (the primary outcome) was measured using the clinician-administered PTSD scale CAPS-2, with assessments conducted at baseline, 1 week post treatment, and 6 months post treatment.

The aerobic exercise regimen was tailored to each participant, based on an assessment of his/her aerobic target zone.

The exposure therapy sessions were identical for both groups. Following the exposure sessions, participants engaged in their respective exercises: Those in the passive stretching group engaged in 20 minutes of exercise, while those in the aerobic group participated in a total of 20 minutes of exercise, with 10 conducted at their personal aerobic target heart rate.

“This level of exercise was chosen because BDNF concentration in the serum is increased by two 3-minute bouts of aerobic exercise, and 10 minutes of aerobic exercise can facilitate extinction learning,” the authors explained.

The aerobic activity consisted of running on a stepper exercise platform while having cardiac activity recorded. A small portion (10%) of the therapy sessions were recorded and rated for treatment fidelity.

Change in PTSD was the primary outcome, with secondary outcomes consisting of changes in depression, anxiety, alcohol use disorder, and posttraumatic cognitions.
 

Few barriers

The researchers found no significant differences in PTSD severity, as measured by CAPS-2 score, between treatment groups at 10 weeks – that is, immediately post treatment (mean difference, 7.0; 95% confidence interval, –2.3 to 16.4; P = .14).

However, significantly greater reductions in PTSD severity were found in the aerobic versus the stretching group at 6-month follow-up (mean difference, 12.1;95% CI, 2.4-21.8; P = .023), pointing to a “moderate effect size” (d = 0.6; 95% CI, 0.1-1.1]).

Although there were no differences found at 6-month assessment between rates of PTSD diagnosis (25% of the aerobic vs 27% of the stretching group), more participants in the aerobic group reached a “minimal clinically important difference,” compared to those in the stretching group (96% vs. 84%, respectively, x² = 4.4; P = .036). 

There were also superior benefits found in the aerobic versus the stretching group on depression severity at 6 months (a secondary outcome), with a mean difference in Beck Depression Inventory-2 score of 5.7 (95% CI, 0.5-10.9; P = .022), yielding a “moderate effect size” (d = 0.5; 95% CI, 0.1-1.0]).

There were no adverse events associated with the intervention, and almost all the sessions (88%) complied with the treatment protocol.

The researchers noted several limitations. For example, they did not obtain plasma to measure BDNF concentrations, so they could not “infer whether the mechanism of change involved BDNF.”

In addition, they did not perform sex-specific analyses. “Future studies could increase the sample size to investigate sex differences because females display less BDNF change following exercise than do males,” they wrote.

Nevertheless, the study “provides initial evidence of a simple and accessible strategy that clinicians could readily apply in combination with exposure therapy,” they stated. “Whereas many pharmacologic interventions pose barriers, including cost, requirement for prescriptions, and patient resistance to drugs, exercise offers clinicians a strategy that can be implemented with few barriers.”

Dr. Bryant emphasized that one study “does not represent a body of evidence, and so it is essential that this finding be replicated in other trials before it can be recommended for clinical use.” He noted that other trials are “currently underway.”
 

Easy augmentation

In a comment, Barbara Rothbaum, PhD, professor in psychiatry and director of the Trauma and Anxiety Recovery Program at Emory University, Atlanta, called it a “well-controlled trial augmenting exposure therapy for PTSD with brief aerobic exercise and finding some benefits of the augmented condition at 6 months posttreatment but not immediately posttreatment.”

The study’s methodology – that is, using independent standard assessment of PTSD and rating audio recordings of therapy sessions for treatment fidelity and quality – can lead us to “be confident in their [the researchers’] conclusions,” she said.

Dr. Rothbaum, who was not associated with this study, described research into methods to augment exposure therapy for PTSD as “timely and clinically relevant.”

Exercise “would be an easy augmentation for many clinicians if it is helpful,” she noted.

The study was funded by the Australian National Health and Medical Research Council. The authors and Dr. Rothbaum reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A brief aerobic exercise intervention can augment the benefits of exposure therapy for PTSD, new research suggests.

Investigators randomly assigned individuals with PTSD to receive either exposure therapy with aerobic exercise or exposure therapy with passive stretching for 9 weeks. At 6 months post intervention, participants in the aerobic exercise group showed greater reductions in PTSD severity, compared with those in the stretching group.

“There is a critical need to improve outcomes for treating people with PTSD, and this finding points to one potentially cheap and ready-to-use strategy that all clinicians could employ with most patients,” lead author Richard Bryant, MPsych, PhD, DSc, director of the Traumatic Stress Clinic and Scientia Professor of Psychology at the University of New South Wales, Sydney, told this news organization.

The study was published online in The Lancet Psychiatry.
 

Promoting BDNF

“Trauma-focused psychotherapy is the recommended treatment for PTSD, but up to half of patients do not respond to this treatment,” Dr. Bryant said.

“We know that brain-derived neurotrophic factors [BDNF] are critical for synaptic plasticity, which underpins the learning that occurs in therapy so that reminders of trauma are no longer fear-provoking,” he continued. “Preclinical animal and human research inform us that brief aerobic exercise can promote BDNF and new learning that inhibits fear responses.”

The researchers “hypothesized that brief exercise after exposure therapy to trauma memories – which is the key ingredient of trauma-focused psychotherapy – would lead to greater reductions in PTSD, relative to standard trauma-focused therapy,” he said.

To investigate the question, the researchers randomly assigned 130 adults with PTSD (mean age, 39 years; 61% female; 76% White) to receive nine 90-minute sessions of exposure therapy with either aerobic exercise or passive stretching (n = 65 in each group).

There were no differences at baseline in sociodemographic characteristics or psychopathology measures, although the mean age of the stretching group was slightly older than that of the aerobic group (40 years vs. 37 years, respectively), and there was a slightly higher proportion of women in the stretching group (68% vs. 54%).

Participants did not differ on weekly exercise either at baseline, immediately post treatment, or at 6-week follow-up.

PTSD severity (the primary outcome) was measured using the clinician-administered PTSD scale CAPS-2, with assessments conducted at baseline, 1 week post treatment, and 6 months post treatment.

The aerobic exercise regimen was tailored to each participant, based on an assessment of his/her aerobic target zone.

The exposure therapy sessions were identical for both groups. Following the exposure sessions, participants engaged in their respective exercises: Those in the passive stretching group engaged in 20 minutes of exercise, while those in the aerobic group participated in a total of 20 minutes of exercise, with 10 conducted at their personal aerobic target heart rate.

“This level of exercise was chosen because BDNF concentration in the serum is increased by two 3-minute bouts of aerobic exercise, and 10 minutes of aerobic exercise can facilitate extinction learning,” the authors explained.

The aerobic activity consisted of running on a stepper exercise platform while having cardiac activity recorded. A small portion (10%) of the therapy sessions were recorded and rated for treatment fidelity.

Change in PTSD was the primary outcome, with secondary outcomes consisting of changes in depression, anxiety, alcohol use disorder, and posttraumatic cognitions.
 

Few barriers

The researchers found no significant differences in PTSD severity, as measured by CAPS-2 score, between treatment groups at 10 weeks – that is, immediately post treatment (mean difference, 7.0; 95% confidence interval, –2.3 to 16.4; P = .14).

However, significantly greater reductions in PTSD severity were found in the aerobic versus the stretching group at 6-month follow-up (mean difference, 12.1;95% CI, 2.4-21.8; P = .023), pointing to a “moderate effect size” (d = 0.6; 95% CI, 0.1-1.1]).

Although there were no differences found at 6-month assessment between rates of PTSD diagnosis (25% of the aerobic vs 27% of the stretching group), more participants in the aerobic group reached a “minimal clinically important difference,” compared to those in the stretching group (96% vs. 84%, respectively, x² = 4.4; P = .036). 

There were also superior benefits found in the aerobic versus the stretching group on depression severity at 6 months (a secondary outcome), with a mean difference in Beck Depression Inventory-2 score of 5.7 (95% CI, 0.5-10.9; P = .022), yielding a “moderate effect size” (d = 0.5; 95% CI, 0.1-1.0]).

There were no adverse events associated with the intervention, and almost all the sessions (88%) complied with the treatment protocol.

The researchers noted several limitations. For example, they did not obtain plasma to measure BDNF concentrations, so they could not “infer whether the mechanism of change involved BDNF.”

In addition, they did not perform sex-specific analyses. “Future studies could increase the sample size to investigate sex differences because females display less BDNF change following exercise than do males,” they wrote.

Nevertheless, the study “provides initial evidence of a simple and accessible strategy that clinicians could readily apply in combination with exposure therapy,” they stated. “Whereas many pharmacologic interventions pose barriers, including cost, requirement for prescriptions, and patient resistance to drugs, exercise offers clinicians a strategy that can be implemented with few barriers.”

Dr. Bryant emphasized that one study “does not represent a body of evidence, and so it is essential that this finding be replicated in other trials before it can be recommended for clinical use.” He noted that other trials are “currently underway.”
 

Easy augmentation

In a comment, Barbara Rothbaum, PhD, professor in psychiatry and director of the Trauma and Anxiety Recovery Program at Emory University, Atlanta, called it a “well-controlled trial augmenting exposure therapy for PTSD with brief aerobic exercise and finding some benefits of the augmented condition at 6 months posttreatment but not immediately posttreatment.”

The study’s methodology – that is, using independent standard assessment of PTSD and rating audio recordings of therapy sessions for treatment fidelity and quality – can lead us to “be confident in their [the researchers’] conclusions,” she said.

Dr. Rothbaum, who was not associated with this study, described research into methods to augment exposure therapy for PTSD as “timely and clinically relevant.”

Exercise “would be an easy augmentation for many clinicians if it is helpful,” she noted.

The study was funded by the Australian National Health and Medical Research Council. The authors and Dr. Rothbaum reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A brief aerobic exercise intervention can augment the benefits of exposure therapy for PTSD, new research suggests.

Investigators randomly assigned individuals with PTSD to receive either exposure therapy with aerobic exercise or exposure therapy with passive stretching for 9 weeks. At 6 months post intervention, participants in the aerobic exercise group showed greater reductions in PTSD severity, compared with those in the stretching group.

“There is a critical need to improve outcomes for treating people with PTSD, and this finding points to one potentially cheap and ready-to-use strategy that all clinicians could employ with most patients,” lead author Richard Bryant, MPsych, PhD, DSc, director of the Traumatic Stress Clinic and Scientia Professor of Psychology at the University of New South Wales, Sydney, told this news organization.

The study was published online in The Lancet Psychiatry.
 

Promoting BDNF

“Trauma-focused psychotherapy is the recommended treatment for PTSD, but up to half of patients do not respond to this treatment,” Dr. Bryant said.

“We know that brain-derived neurotrophic factors [BDNF] are critical for synaptic plasticity, which underpins the learning that occurs in therapy so that reminders of trauma are no longer fear-provoking,” he continued. “Preclinical animal and human research inform us that brief aerobic exercise can promote BDNF and new learning that inhibits fear responses.”

The researchers “hypothesized that brief exercise after exposure therapy to trauma memories – which is the key ingredient of trauma-focused psychotherapy – would lead to greater reductions in PTSD, relative to standard trauma-focused therapy,” he said.

To investigate the question, the researchers randomly assigned 130 adults with PTSD (mean age, 39 years; 61% female; 76% White) to receive nine 90-minute sessions of exposure therapy with either aerobic exercise or passive stretching (n = 65 in each group).

There were no differences at baseline in sociodemographic characteristics or psychopathology measures, although the mean age of the stretching group was slightly older than that of the aerobic group (40 years vs. 37 years, respectively), and there was a slightly higher proportion of women in the stretching group (68% vs. 54%).

Participants did not differ on weekly exercise either at baseline, immediately post treatment, or at 6-week follow-up.

PTSD severity (the primary outcome) was measured using the clinician-administered PTSD scale CAPS-2, with assessments conducted at baseline, 1 week post treatment, and 6 months post treatment.

The aerobic exercise regimen was tailored to each participant, based on an assessment of his/her aerobic target zone.

The exposure therapy sessions were identical for both groups. Following the exposure sessions, participants engaged in their respective exercises: Those in the passive stretching group engaged in 20 minutes of exercise, while those in the aerobic group participated in a total of 20 minutes of exercise, with 10 conducted at their personal aerobic target heart rate.

“This level of exercise was chosen because BDNF concentration in the serum is increased by two 3-minute bouts of aerobic exercise, and 10 minutes of aerobic exercise can facilitate extinction learning,” the authors explained.

The aerobic activity consisted of running on a stepper exercise platform while having cardiac activity recorded. A small portion (10%) of the therapy sessions were recorded and rated for treatment fidelity.

Change in PTSD was the primary outcome, with secondary outcomes consisting of changes in depression, anxiety, alcohol use disorder, and posttraumatic cognitions.
 

Few barriers

The researchers found no significant differences in PTSD severity, as measured by CAPS-2 score, between treatment groups at 10 weeks – that is, immediately post treatment (mean difference, 7.0; 95% confidence interval, –2.3 to 16.4; P = .14).

However, significantly greater reductions in PTSD severity were found in the aerobic versus the stretching group at 6-month follow-up (mean difference, 12.1;95% CI, 2.4-21.8; P = .023), pointing to a “moderate effect size” (d = 0.6; 95% CI, 0.1-1.1]).

Although there were no differences found at 6-month assessment between rates of PTSD diagnosis (25% of the aerobic vs 27% of the stretching group), more participants in the aerobic group reached a “minimal clinically important difference,” compared to those in the stretching group (96% vs. 84%, respectively, x² = 4.4; P = .036). 

There were also superior benefits found in the aerobic versus the stretching group on depression severity at 6 months (a secondary outcome), with a mean difference in Beck Depression Inventory-2 score of 5.7 (95% CI, 0.5-10.9; P = .022), yielding a “moderate effect size” (d = 0.5; 95% CI, 0.1-1.0]).

There were no adverse events associated with the intervention, and almost all the sessions (88%) complied with the treatment protocol.

The researchers noted several limitations. For example, they did not obtain plasma to measure BDNF concentrations, so they could not “infer whether the mechanism of change involved BDNF.”

In addition, they did not perform sex-specific analyses. “Future studies could increase the sample size to investigate sex differences because females display less BDNF change following exercise than do males,” they wrote.

Nevertheless, the study “provides initial evidence of a simple and accessible strategy that clinicians could readily apply in combination with exposure therapy,” they stated. “Whereas many pharmacologic interventions pose barriers, including cost, requirement for prescriptions, and patient resistance to drugs, exercise offers clinicians a strategy that can be implemented with few barriers.”

Dr. Bryant emphasized that one study “does not represent a body of evidence, and so it is essential that this finding be replicated in other trials before it can be recommended for clinical use.” He noted that other trials are “currently underway.”
 

Easy augmentation

In a comment, Barbara Rothbaum, PhD, professor in psychiatry and director of the Trauma and Anxiety Recovery Program at Emory University, Atlanta, called it a “well-controlled trial augmenting exposure therapy for PTSD with brief aerobic exercise and finding some benefits of the augmented condition at 6 months posttreatment but not immediately posttreatment.”

The study’s methodology – that is, using independent standard assessment of PTSD and rating audio recordings of therapy sessions for treatment fidelity and quality – can lead us to “be confident in their [the researchers’] conclusions,” she said.

Dr. Rothbaum, who was not associated with this study, described research into methods to augment exposure therapy for PTSD as “timely and clinically relevant.”

Exercise “would be an easy augmentation for many clinicians if it is helpful,” she noted.

The study was funded by the Australian National Health and Medical Research Council. The authors and Dr. Rothbaum reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

When I was growing up, I can remember experiencing “duck and cover” drills at school. If a flash appeared in our peripheral vision, we were told we should not look at it but crawl under our desks. My classmates and I were being taught how to protect ourselves in case of a nuclear attack.

Clearly, had there been such an attack, ducking under our desks would not have saved us. Thankfully, such a conflict never occurred – and hopefully never will. Still, the warning did penetrate our psyches. In those days, families and children in schools were worried, and some were scared.

The situation is quite different today. Our children and grandchildren are being taught to protect themselves not from actions overseas – that never happened – but from what someone living in their community might do that has been occurring in real time. According to my daughter-in-law, her young children are taught during “lockdowns” to hide in their classrooms’ closets. During these drills, some children are directed to line up against a wall that would be out of sight of a shooter, and to stay as still as possible.

Since 2017, the number of intentional shootings in U.S. kindergarten through grade 12 schools increased precipitously (Prev Med. 2022 Dec. doi: 10.1016/j.ypmed.2022.107280). Imagine the psychological impact that the vigilance required to deal with such impending threats must be having on our children, as they learn to fear injury and possible death every day they go to school. I’ve talked with numerous parents about this, including my own adult children, and this is clearly a new dimension of life that is on everyone’s minds. Schools, once bastions of safety, are no longer that safe.

For many years, I’ve written about the need to destigmatize mental illness so that it is treated on a par with physical illness. As we look at the challenges faced by young people, reframing mental illness is more important now than ever. This means finding ways to increase the funding of studies that help us understand young people with mental health issues. It also means encouraging patients to pursue treatment from psychiatrists, psychologists, or mental health counselors who specialize in short-term therapy.

The emphasis here on short-term therapy is not to discourage longer-term care when needed, but clearly short-term care strategies, such as cognitive-behavioral therapies, not only work for problem resolution, they also help in the destigmatization of mental health care – as the circumscribed treatment with a clear beginning, middle, and end is consistent with CBT and consistent with much of medical care for physical disorders.

Furthermore, as we aim to destigmatize mental health care, it’s important to equate it with physical care. For example, taking a day or two from school or work for a sprained ankle, seeing a dentist, or an eye exam, plus a myriad of physical issues is quite acceptable. Why is it not also acceptable for a mental health issue and evaluation, such as for anxiety or PTSD, plus being able to talk about it without stigma? Seeing the “shrink” needs to be removed as a negative but viewed as a very positive move toward care for oneself.

In addition, children and adolescents are battling countless other health challenges that could have implications for mental health professionals, for example:

• During the height of the coronavirus pandemic, pediatric endocrinologists reportedly saw a surge of referrals for girls experiencing early puberty. Puberty should never be medicalized, but early maturation has been linked to numerous psychiatric disorders such as depression, anxiety, and eating disorders (J Pediatr Adolec Gynecol. 2022 Oct. doi: 10.1016/j.jpag.2022.05.005).
• A global epidemiologic study of children estimates that nearly 8 million youth lost a parent or caregiver because of a pandemic-related cause between Jan. 1, 2020, and May 1, 2022. An additional 2.5 million children were affected by the loss of secondary caregivers such as grandparents (JAMA Pediatr. 2022 Sept. doi: 10.1001/jamapediatrics.2022.3157).
• The inpatient and outpatient volume of adolescents and young adults receiving care for eating disorders skyrocketed before and after the pandemic, according to the results of case study series (JAMA Pediatrics. 2022 Nov 7. doi: 10.1001/jamapediatrics.2022.4346).
• Children and adolescents who developed COVID-19 suffered tremendously during the height of the pandemic. A nationwide analysis shows that COVID-19 nearly tripled children’s risks of developing new mental health illnesses, such as attention-deficit/hyperactivity disorder, anxiety, trauma, or stress disorder (Psychiatric Services. 2022 Jun 2. doi: 10.1176/appi.ps.202100646).

In addition to those challenges, young children are facing an increase in respiratory syncytial virus (RSV) infection. We were told the “flu” would be quite bad this year and to beware of monkeypox. However, very little mention is made of the equally distressing “epidemic” of mental health issues, PTSD, anxiety, and depression as we are still in the midst of the COVID pandemic in the United States with almost 400 deaths a day – a very unacceptable number.

Interestingly, we seem to have abandoned the use of masks as protection against COVID and other respiratory diseases, despite their effectiveness. A study in Boston that looked at children in two school districts that did not lift mask mandates demonstrated that mask wearing does indeed lead to significant reductions in the number of pediatric COVID cases. In addition to societal violence and school shootings – which certainly exacerbate anxiety – the fear of dying or the death of a loved one, tied to COVID, may lead to epidemic proportions of PTSD in children. As an article in WebMD noted, “pediatricians are imploring the federal government to declare a national emergency as cases of pediatric respiratory illnesses continue to soar.”

In light of the acknowledged mental health crisis in children, which appears epidemic, I would hope the psychiatric and psychological associations would publicly sound an alarm so that resources could be brought to bear to address this critical issue. I believe doing so would also aid in destigmatizing mental disorders, and increase education and treatment.

Layered on top of those issues are natural disasters, such as the fallout from Tropical Storm Nicole when it recently caused devastation across western Florida. The mental health trauma caused by recent tropical storms seems all but forgotten – except for those who are still suffering. All of this adds up to a society-wide mental health crisis, which seems far more expansive than monkeypox, for example. Yet monkeypox, which did lead to thousands of cases and approximately 29 deaths in the United States, was declared a national public health emergency.

Additionally, RSV killed 100-500 U.S. children under age 5 each year before the pandemic, according to the Centers for Disease Control and Prevention, and currently it appears even worse. Yet despite the seriousness of RSV, it nowhere matches the emotional toll COVID has taken on children globally.

Let’s make it standard practice for children – and of course, adults – to be taught that anxiety is a normal response at times. We should teach that, in some cases, feeling “down” or in despair and even experiencing symptoms of PTSD based on what’s going on personally and within our environment (i.e., COVID, school shootings, etc.) are triggers and responses that can be addressed and often quickly treated by talking with a mental health professional.

Dr. London is a practicing psychiatrist and has been a newspaper columnist for 35 years, specializing in and writing about short-term therapy, including cognitive-behavioral therapy and guided imagery. He is author of “Find Freedom Fast” (New York: Kettlehole Publishing, 2019). He has no conflicts of interest.

When I was growing up, I can remember experiencing “duck and cover” drills at school. If a flash appeared in our peripheral vision, we were told we should not look at it but crawl under our desks. My classmates and I were being taught how to protect ourselves in case of a nuclear attack.

Clearly, had there been such an attack, ducking under our desks would not have saved us. Thankfully, such a conflict never occurred – and hopefully never will. Still, the warning did penetrate our psyches. In those days, families and children in schools were worried, and some were scared.

The situation is quite different today. Our children and grandchildren are being taught to protect themselves not from actions overseas – that never happened – but from what someone living in their community might do that has been occurring in real time. According to my daughter-in-law, her young children are taught during “lockdowns” to hide in their classrooms’ closets. During these drills, some children are directed to line up against a wall that would be out of sight of a shooter, and to stay as still as possible.

Since 2017, the number of intentional shootings in U.S. kindergarten through grade 12 schools increased precipitously (Prev Med. 2022 Dec. doi: 10.1016/j.ypmed.2022.107280). Imagine the psychological impact that the vigilance required to deal with such impending threats must be having on our children, as they learn to fear injury and possible death every day they go to school. I’ve talked with numerous parents about this, including my own adult children, and this is clearly a new dimension of life that is on everyone’s minds. Schools, once bastions of safety, are no longer that safe.

For many years, I’ve written about the need to destigmatize mental illness so that it is treated on a par with physical illness. As we look at the challenges faced by young people, reframing mental illness is more important now than ever. This means finding ways to increase the funding of studies that help us understand young people with mental health issues. It also means encouraging patients to pursue treatment from psychiatrists, psychologists, or mental health counselors who specialize in short-term therapy.

The emphasis here on short-term therapy is not to discourage longer-term care when needed, but clearly short-term care strategies, such as cognitive-behavioral therapies, not only work for problem resolution, they also help in the destigmatization of mental health care – as the circumscribed treatment with a clear beginning, middle, and end is consistent with CBT and consistent with much of medical care for physical disorders.

Furthermore, as we aim to destigmatize mental health care, it’s important to equate it with physical care. For example, taking a day or two from school or work for a sprained ankle, seeing a dentist, or an eye exam, plus a myriad of physical issues is quite acceptable. Why is it not also acceptable for a mental health issue and evaluation, such as for anxiety or PTSD, plus being able to talk about it without stigma? Seeing the “shrink” needs to be removed as a negative but viewed as a very positive move toward care for oneself.

In addition, children and adolescents are battling countless other health challenges that could have implications for mental health professionals, for example:

• During the height of the coronavirus pandemic, pediatric endocrinologists reportedly saw a surge of referrals for girls experiencing early puberty. Puberty should never be medicalized, but early maturation has been linked to numerous psychiatric disorders such as depression, anxiety, and eating disorders (J Pediatr Adolec Gynecol. 2022 Oct. doi: 10.1016/j.jpag.2022.05.005).
• A global epidemiologic study of children estimates that nearly 8 million youth lost a parent or caregiver because of a pandemic-related cause between Jan. 1, 2020, and May 1, 2022. An additional 2.5 million children were affected by the loss of secondary caregivers such as grandparents (JAMA Pediatr. 2022 Sept. doi: 10.1001/jamapediatrics.2022.3157).
• The inpatient and outpatient volume of adolescents and young adults receiving care for eating disorders skyrocketed before and after the pandemic, according to the results of case study series (JAMA Pediatrics. 2022 Nov 7. doi: 10.1001/jamapediatrics.2022.4346).
• Children and adolescents who developed COVID-19 suffered tremendously during the height of the pandemic. A nationwide analysis shows that COVID-19 nearly tripled children’s risks of developing new mental health illnesses, such as attention-deficit/hyperactivity disorder, anxiety, trauma, or stress disorder (Psychiatric Services. 2022 Jun 2. doi: 10.1176/appi.ps.202100646).

In addition to those challenges, young children are facing an increase in respiratory syncytial virus (RSV) infection. We were told the “flu” would be quite bad this year and to beware of monkeypox. However, very little mention is made of the equally distressing “epidemic” of mental health issues, PTSD, anxiety, and depression as we are still in the midst of the COVID pandemic in the United States with almost 400 deaths a day – a very unacceptable number.

Interestingly, we seem to have abandoned the use of masks as protection against COVID and other respiratory diseases, despite their effectiveness. A study in Boston that looked at children in two school districts that did not lift mask mandates demonstrated that mask wearing does indeed lead to significant reductions in the number of pediatric COVID cases. In addition to societal violence and school shootings – which certainly exacerbate anxiety – the fear of dying or the death of a loved one, tied to COVID, may lead to epidemic proportions of PTSD in children. As an article in WebMD noted, “pediatricians are imploring the federal government to declare a national emergency as cases of pediatric respiratory illnesses continue to soar.”

In light of the acknowledged mental health crisis in children, which appears epidemic, I would hope the psychiatric and psychological associations would publicly sound an alarm so that resources could be brought to bear to address this critical issue. I believe doing so would also aid in destigmatizing mental disorders, and increase education and treatment.

Layered on top of those issues are natural disasters, such as the fallout from Tropical Storm Nicole when it recently caused devastation across western Florida. The mental health trauma caused by recent tropical storms seems all but forgotten – except for those who are still suffering. All of this adds up to a society-wide mental health crisis, which seems far more expansive than monkeypox, for example. Yet monkeypox, which did lead to thousands of cases and approximately 29 deaths in the United States, was declared a national public health emergency.

Additionally, RSV killed 100-500 U.S. children under age 5 each year before the pandemic, according to the Centers for Disease Control and Prevention, and currently it appears even worse. Yet despite the seriousness of RSV, it nowhere matches the emotional toll COVID has taken on children globally.

Let’s make it standard practice for children – and of course, adults – to be taught that anxiety is a normal response at times. We should teach that, in some cases, feeling “down” or in despair and even experiencing symptoms of PTSD based on what’s going on personally and within our environment (i.e., COVID, school shootings, etc.) are triggers and responses that can be addressed and often quickly treated by talking with a mental health professional.

Dr. London is a practicing psychiatrist and has been a newspaper columnist for 35 years, specializing in and writing about short-term therapy, including cognitive-behavioral therapy and guided imagery. He is author of “Find Freedom Fast” (New York: Kettlehole Publishing, 2019). He has no conflicts of interest.

When I was growing up, I can remember experiencing “duck and cover” drills at school. If a flash appeared in our peripheral vision, we were told we should not look at it but crawl under our desks. My classmates and I were being taught how to protect ourselves in case of a nuclear attack.

Clearly, had there been such an attack, ducking under our desks would not have saved us. Thankfully, such a conflict never occurred – and hopefully never will. Still, the warning did penetrate our psyches. In those days, families and children in schools were worried, and some were scared.

The situation is quite different today. Our children and grandchildren are being taught to protect themselves not from actions overseas – that never happened – but from what someone living in their community might do that has been occurring in real time. According to my daughter-in-law, her young children are taught during “lockdowns” to hide in their classrooms’ closets. During these drills, some children are directed to line up against a wall that would be out of sight of a shooter, and to stay as still as possible.

Since 2017, the number of intentional shootings in U.S. kindergarten through grade 12 schools increased precipitously (Prev Med. 2022 Dec. doi: 10.1016/j.ypmed.2022.107280). Imagine the psychological impact that the vigilance required to deal with such impending threats must be having on our children, as they learn to fear injury and possible death every day they go to school. I’ve talked with numerous parents about this, including my own adult children, and this is clearly a new dimension of life that is on everyone’s minds. Schools, once bastions of safety, are no longer that safe.

For many years, I’ve written about the need to destigmatize mental illness so that it is treated on a par with physical illness. As we look at the challenges faced by young people, reframing mental illness is more important now than ever. This means finding ways to increase the funding of studies that help us understand young people with mental health issues. It also means encouraging patients to pursue treatment from psychiatrists, psychologists, or mental health counselors who specialize in short-term therapy.

The emphasis here on short-term therapy is not to discourage longer-term care when needed, but clearly short-term care strategies, such as cognitive-behavioral therapies, not only work for problem resolution, they also help in the destigmatization of mental health care – as the circumscribed treatment with a clear beginning, middle, and end is consistent with CBT and consistent with much of medical care for physical disorders.

Furthermore, as we aim to destigmatize mental health care, it’s important to equate it with physical care. For example, taking a day or two from school or work for a sprained ankle, seeing a dentist, or an eye exam, plus a myriad of physical issues is quite acceptable. Why is it not also acceptable for a mental health issue and evaluation, such as for anxiety or PTSD, plus being able to talk about it without stigma? Seeing the “shrink” needs to be removed as a negative but viewed as a very positive move toward care for oneself.

In addition, children and adolescents are battling countless other health challenges that could have implications for mental health professionals, for example:

• During the height of the coronavirus pandemic, pediatric endocrinologists reportedly saw a surge of referrals for girls experiencing early puberty. Puberty should never be medicalized, but early maturation has been linked to numerous psychiatric disorders such as depression, anxiety, and eating disorders (J Pediatr Adolec Gynecol. 2022 Oct. doi: 10.1016/j.jpag.2022.05.005).
• A global epidemiologic study of children estimates that nearly 8 million youth lost a parent or caregiver because of a pandemic-related cause between Jan. 1, 2020, and May 1, 2022. An additional 2.5 million children were affected by the loss of secondary caregivers such as grandparents (JAMA Pediatr. 2022 Sept. doi: 10.1001/jamapediatrics.2022.3157).
• The inpatient and outpatient volume of adolescents and young adults receiving care for eating disorders skyrocketed before and after the pandemic, according to the results of case study series (JAMA Pediatrics. 2022 Nov 7. doi: 10.1001/jamapediatrics.2022.4346).
• Children and adolescents who developed COVID-19 suffered tremendously during the height of the pandemic. A nationwide analysis shows that COVID-19 nearly tripled children’s risks of developing new mental health illnesses, such as attention-deficit/hyperactivity disorder, anxiety, trauma, or stress disorder (Psychiatric Services. 2022 Jun 2. doi: 10.1176/appi.ps.202100646).

In addition to those challenges, young children are facing an increase in respiratory syncytial virus (RSV) infection. We were told the “flu” would be quite bad this year and to beware of monkeypox. However, very little mention is made of the equally distressing “epidemic” of mental health issues, PTSD, anxiety, and depression as we are still in the midst of the COVID pandemic in the United States with almost 400 deaths a day – a very unacceptable number.

Interestingly, we seem to have abandoned the use of masks as protection against COVID and other respiratory diseases, despite their effectiveness. A study in Boston that looked at children in two school districts that did not lift mask mandates demonstrated that mask wearing does indeed lead to significant reductions in the number of pediatric COVID cases. In addition to societal violence and school shootings – which certainly exacerbate anxiety – the fear of dying or the death of a loved one, tied to COVID, may lead to epidemic proportions of PTSD in children. As an article in WebMD noted, “pediatricians are imploring the federal government to declare a national emergency as cases of pediatric respiratory illnesses continue to soar.”

In light of the acknowledged mental health crisis in children, which appears epidemic, I would hope the psychiatric and psychological associations would publicly sound an alarm so that resources could be brought to bear to address this critical issue. I believe doing so would also aid in destigmatizing mental disorders, and increase education and treatment.

Layered on top of those issues are natural disasters, such as the fallout from Tropical Storm Nicole when it recently caused devastation across western Florida. The mental health trauma caused by recent tropical storms seems all but forgotten – except for those who are still suffering. All of this adds up to a society-wide mental health crisis, which seems far more expansive than monkeypox, for example. Yet monkeypox, which did lead to thousands of cases and approximately 29 deaths in the United States, was declared a national public health emergency.

Additionally, RSV killed 100-500 U.S. children under age 5 each year before the pandemic, according to the Centers for Disease Control and Prevention, and currently it appears even worse. Yet despite the seriousness of RSV, it nowhere matches the emotional toll COVID has taken on children globally.

Let’s make it standard practice for children – and of course, adults – to be taught that anxiety is a normal response at times. We should teach that, in some cases, feeling “down” or in despair and even experiencing symptoms of PTSD based on what’s going on personally and within our environment (i.e., COVID, school shootings, etc.) are triggers and responses that can be addressed and often quickly treated by talking with a mental health professional.

Dr. London is a practicing psychiatrist and has been a newspaper columnist for 35 years, specializing in and writing about short-term therapy, including cognitive-behavioral therapy and guided imagery. He is author of “Find Freedom Fast” (New York: Kettlehole Publishing, 2019). He has no conflicts of interest.

Postpartum depression, anxiety, and posttraumatic stress disorder that persist 2-3 years after birth are associated with a dysregulated immune system that is characterized by increased inflammatory signaling, according to investigators.

These findings suggest that mental health screening for women who have given birth should continue beyond the first year post partum, reported lead author Jennifer M. Nicoloro-SantaBarbara, PhD, of Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues.

“Delayed postpartum depression, also known as late-onset postpartum depression, can affect women up to 18 months after delivery,” the investigators wrote in the American Journal of Reproductive Immunology. “It can appear even later in some women, depending on the hormonal changes that occur after having a baby (for example, timing of weaning). However, the majority of research on maternal mental health focuses on the first year post birth, leaving a gap in research beyond 12 months post partum.”

To address this gap, the investigators enrolled 33 women who were 2-3 years post partum. Participants completed self-guided questionnaires on PTSD, depression, and anxiety, and provided blood samples for gene expression analysis.

Sixteen of the 33 women had clinically significant mood disturbances. Compared with the other participants, these 16 women had significant upregulation of genes driving inflammatory pathways and significantly reduced activation of genes associated with viral response.

“The results provide preliminary evidence of a mechanism (e.g., immune dysregulation) that might be contributing to mood disorders and bring us closer to the goal of identifying targetable biomarkers for mood disorders,” Dr. Nicoloro-SantaBarbara said in a written comment. “This work highlights the need for standardized and continual depression and anxiety screening in ob.gyn. and primary care settings that extends beyond the 6-week maternal visit and possibly beyond the first postpartum year.”
 

Findings draw skepticism

“The authors argue that mothers need to be screened for depression/anxiety longer than the first year post partum, and this is true, but it has nothing to do with their findings,” said Jennifer L. Payne, MD, an expert in reproductive psychiatry at the University of Virginia, Charlottesville.

In a written comment, she explained that the cross-sectional design makes it impossible to know whether the mood disturbances were linked with delivery at all.

“It is unclear if the depression/anxiety symptoms began after delivery or not,” Dr. Payne said. “In addition, it is unclear if the findings are causative or a result of depression/anxiety symptoms (the authors admit this in the limitations section). It is likely that the findings are not specific or even related to having delivered a child, but rather reflect a more general process related to depression/anxiety outside of the postpartum time period.”

Only prospective studies can answer these questions, she said.

Dr. Nicoloro-SantaBarbara agreed that further research is needed.

“Our findings are exciting, but still need to be replicated in larger samples with diverse women in order to make sure they generalize,” she said. “More work is needed to understand why inflammation plays a role in postpartum mental illness for some women and not others.”

The study was supported by a Cedars-Sinai Precision Health Grant, the Cousins Center for Psychoneuroimmunology, University of California, Los Angeles, and the National Institute of Mental Health. The investigators and Dr. Payne disclosed no relevant conflicts of interest.

Postpartum depression, anxiety, and posttraumatic stress disorder that persist 2-3 years after birth are associated with a dysregulated immune system that is characterized by increased inflammatory signaling, according to investigators.

These findings suggest that mental health screening for women who have given birth should continue beyond the first year post partum, reported lead author Jennifer M. Nicoloro-SantaBarbara, PhD, of Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues.

“Delayed postpartum depression, also known as late-onset postpartum depression, can affect women up to 18 months after delivery,” the investigators wrote in the American Journal of Reproductive Immunology. “It can appear even later in some women, depending on the hormonal changes that occur after having a baby (for example, timing of weaning). However, the majority of research on maternal mental health focuses on the first year post birth, leaving a gap in research beyond 12 months post partum.”

To address this gap, the investigators enrolled 33 women who were 2-3 years post partum. Participants completed self-guided questionnaires on PTSD, depression, and anxiety, and provided blood samples for gene expression analysis.

Sixteen of the 33 women had clinically significant mood disturbances. Compared with the other participants, these 16 women had significant upregulation of genes driving inflammatory pathways and significantly reduced activation of genes associated with viral response.

“The results provide preliminary evidence of a mechanism (e.g., immune dysregulation) that might be contributing to mood disorders and bring us closer to the goal of identifying targetable biomarkers for mood disorders,” Dr. Nicoloro-SantaBarbara said in a written comment. “This work highlights the need for standardized and continual depression and anxiety screening in ob.gyn. and primary care settings that extends beyond the 6-week maternal visit and possibly beyond the first postpartum year.”
 

Findings draw skepticism

“The authors argue that mothers need to be screened for depression/anxiety longer than the first year post partum, and this is true, but it has nothing to do with their findings,” said Jennifer L. Payne, MD, an expert in reproductive psychiatry at the University of Virginia, Charlottesville.

In a written comment, she explained that the cross-sectional design makes it impossible to know whether the mood disturbances were linked with delivery at all.

“It is unclear if the depression/anxiety symptoms began after delivery or not,” Dr. Payne said. “In addition, it is unclear if the findings are causative or a result of depression/anxiety symptoms (the authors admit this in the limitations section). It is likely that the findings are not specific or even related to having delivered a child, but rather reflect a more general process related to depression/anxiety outside of the postpartum time period.”

Only prospective studies can answer these questions, she said.

Dr. Nicoloro-SantaBarbara agreed that further research is needed.

“Our findings are exciting, but still need to be replicated in larger samples with diverse women in order to make sure they generalize,” she said. “More work is needed to understand why inflammation plays a role in postpartum mental illness for some women and not others.”

The study was supported by a Cedars-Sinai Precision Health Grant, the Cousins Center for Psychoneuroimmunology, University of California, Los Angeles, and the National Institute of Mental Health. The investigators and Dr. Payne disclosed no relevant conflicts of interest.

Postpartum depression, anxiety, and posttraumatic stress disorder that persist 2-3 years after birth are associated with a dysregulated immune system that is characterized by increased inflammatory signaling, according to investigators.

These findings suggest that mental health screening for women who have given birth should continue beyond the first year post partum, reported lead author Jennifer M. Nicoloro-SantaBarbara, PhD, of Brigham and Women’s Hospital, Harvard Medical School, Boston, and colleagues.

“Delayed postpartum depression, also known as late-onset postpartum depression, can affect women up to 18 months after delivery,” the investigators wrote in the American Journal of Reproductive Immunology. “It can appear even later in some women, depending on the hormonal changes that occur after having a baby (for example, timing of weaning). However, the majority of research on maternal mental health focuses on the first year post birth, leaving a gap in research beyond 12 months post partum.”

To address this gap, the investigators enrolled 33 women who were 2-3 years post partum. Participants completed self-guided questionnaires on PTSD, depression, and anxiety, and provided blood samples for gene expression analysis.

Sixteen of the 33 women had clinically significant mood disturbances. Compared with the other participants, these 16 women had significant upregulation of genes driving inflammatory pathways and significantly reduced activation of genes associated with viral response.

“The results provide preliminary evidence of a mechanism (e.g., immune dysregulation) that might be contributing to mood disorders and bring us closer to the goal of identifying targetable biomarkers for mood disorders,” Dr. Nicoloro-SantaBarbara said in a written comment. “This work highlights the need for standardized and continual depression and anxiety screening in ob.gyn. and primary care settings that extends beyond the 6-week maternal visit and possibly beyond the first postpartum year.”
 

Findings draw skepticism

“The authors argue that mothers need to be screened for depression/anxiety longer than the first year post partum, and this is true, but it has nothing to do with their findings,” said Jennifer L. Payne, MD, an expert in reproductive psychiatry at the University of Virginia, Charlottesville.

In a written comment, she explained that the cross-sectional design makes it impossible to know whether the mood disturbances were linked with delivery at all.

“It is unclear if the depression/anxiety symptoms began after delivery or not,” Dr. Payne said. “In addition, it is unclear if the findings are causative or a result of depression/anxiety symptoms (the authors admit this in the limitations section). It is likely that the findings are not specific or even related to having delivered a child, but rather reflect a more general process related to depression/anxiety outside of the postpartum time period.”

Only prospective studies can answer these questions, she said.

Dr. Nicoloro-SantaBarbara agreed that further research is needed.

“Our findings are exciting, but still need to be replicated in larger samples with diverse women in order to make sure they generalize,” she said. “More work is needed to understand why inflammation plays a role in postpartum mental illness for some women and not others.”

The study was supported by a Cedars-Sinai Precision Health Grant, the Cousins Center for Psychoneuroimmunology, University of California, Los Angeles, and the National Institute of Mental Health. The investigators and Dr. Payne disclosed no relevant conflicts of interest.

A digital intervention may offer a new and effective treatment option for panic disorder (PD) and posttraumatic stress disorder, new research suggests.

The 28-day home-based treatment, known as the capnometry guided respiratory intervention (CGRI), uses an app-based feedback protocol to normalize respiration and increase patients’ ability to cope with symptoms of stress, anxiety, and panic by providing real time breath-to-breath feedback of respiratory rate and carbon dioxide (CO₂) levels via a nasal cannula.

Freespira

Results from the large real-world study showed that over 65% of patients with PD and over 72% of those with PTSD responded to the treatment. In addition, almost 75% of participants adhered to the study protocol, with low dropout rates.

“The brief duration of treatment, high adherence rates, and clinical benefit suggests that CGRI provides an important addition to treatment options for PD and PTSD,” the investigators write.

The study was published online in Frontiers in Digital Health.
 

‘New kid on the block’

The “respiratory dysregulation hypothesis” links CO₂ sensitivity to panic attacks and PD, and similar reactivity has been identified in PTSD, but a “common limitation of psychotherapeutic and pharmacologic approaches to PD and PTSD is that neither address the role of respiratory physiology and breathing style,” the investigators note.

The most widely studied treatment for PTSD is trauma-focused psychotherapy, in which the patient reviews and revisits the trauma, but it has a high dropout rate, study investigator Michael Telch, PhD, director of the Laboratory for the Study of Anxiety Disorders, University of Texas, Austin, told this news organization.

He described CGRI for PTSD as a “relatively new kid on the block, so to speak.” The intervention was cleared by the U.S. Food and Drug Administration for treatment of PD and PTSD in 2013 and 2018, respectively, and is currently available through the Veterans Administration for veterans with PTSD. It is also covered by some commercial insurance plans.

“The underlying assumption [of CGRI] is that a person can learn to develop skills for controlling some of their physiological reactions that are triggered as a result of trauma,” said Dr. Telch.

The device uses a biofeedback approach to give patients “greater control over their physiological reactions, such as hyperventilation and increased respiration rate, and the focus is on providing a sense of mastery,” he said.

Participants with PTSD were assigned to a health coach. The device was delivered to the patient’s home, and patients met with the trained coach weekly and could check in between visits via text or e-mail. Twice-daily sessions were recommended.

“The coach gets feedback about what’s happening with the patient’s respiration and end-tidal CO₂ levels [etCO₂] and instructs participants how to keep their respiration rate and etCO₂ at a more normal level,” said Dr. Telch.

The CGRI “teaches a specific breathing style via a system providing real-time feedback of respiratory rate (RR) and exhaled carbon dioxide levels facilitated by data capture,” the authors note.
 

Sense of mastery

Of the 1,569 participants, 1,395 had PD and 174 had PTSD (mean age, 39.2 [standard deviation, 13.9] years and 40.9 [SD, 14.9] years, respectively; 76% and 73% female, respectively). Those with PD completed the Panic Disorder Severity Scale (PDSS) and those with PTSD completed the Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5), before and after the intervention.

The treatment response rate for PD was defined as a 40% or greater reduction in PDSS total scores, whereas treatment response rate for PTSD was defined as a 10-point or greater reduction in PCL-5 scores.

At baseline, patients were classified either as normocapnic or hypocapnic (etCO₂ ≥ 37 or < 37, respectively), with 65% classified as normocapnic and 35% classified as hypocapnic.

Among patients with PD, there was a 50.2% mean pre- to posttreatment reduction in total PDSS scores (P < .001; d = 1.31), with a treatment response rate of 65.3% of patients.

Among patients with PTSD, there was a 41.1% pre- to posttreatment reduction in total PCL-5 scores (P < .001; d = 1.16), with a treatment response rate of 72.4%.

When investigators analyzed the response at the individual level, they found that 55.7% of patients with PD and 53.5% of those with PTSD were classified as treatment responders. This determination was based on a two-pronged approach that first calculated the Reliable Change Index (RCI) for each participant, and, in participants showing statistically reliable improvement, whether the posttreatment score was closer to the distribution of scores for patients without or with the given disorder.

“Patients with both normal and below-normal baseline exhaled CO2 levels experienced comparable benefit,” the authors report.

‘A viable alternative’

Commenting on the research, Charles Marmar, MD, chair and Peter H. Schub Professor of Psychiatry, department of psychiatry, New York University, said that the study has some limitations, probably the most significant of which is that most participants had normal baseline CO₂ levels.

“The treatment is fundamentally designed for people who hyperventilate and blow off too much CO₂ so they can breathe in a more calm, relaxed way, but most people in the trial had normal CO₂ to begin with,” said Dr. Marmar, who was not involved with the study.

“It’s likely that the major benefits were the relaxation from doing the breathing exercises rather than the change in CO₂ levels,” he speculated.

The treatment is “probably a good thing for those patients who actually have abnormal CO₂ levels. This treatment could be used in precision medicine, where you tailor treatments to those who actually need them rather than giving the same treatment to everyone,” he said.

“For patients who don’t respond to trauma-focused therapy or it’s too aversive for them to undergo, this new intervention provides a viable alternative,” Dr. Telch added.

The study was internally funded by Freespira. Dr. Telch is a scientific advisor at Freespira and receives compensation by way of stock options. The other authors’ disclosures are listed on the original paper. Dr. Marmar has declared no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A digital intervention may offer a new and effective treatment option for panic disorder (PD) and posttraumatic stress disorder, new research suggests.

The 28-day home-based treatment, known as the capnometry guided respiratory intervention (CGRI), uses an app-based feedback protocol to normalize respiration and increase patients’ ability to cope with symptoms of stress, anxiety, and panic by providing real time breath-to-breath feedback of respiratory rate and carbon dioxide (CO₂) levels via a nasal cannula.

Freespira

Results from the large real-world study showed that over 65% of patients with PD and over 72% of those with PTSD responded to the treatment. In addition, almost 75% of participants adhered to the study protocol, with low dropout rates.

“The brief duration of treatment, high adherence rates, and clinical benefit suggests that CGRI provides an important addition to treatment options for PD and PTSD,” the investigators write.

The study was published online in Frontiers in Digital Health.
 

‘New kid on the block’

The “respiratory dysregulation hypothesis” links CO₂ sensitivity to panic attacks and PD, and similar reactivity has been identified in PTSD, but a “common limitation of psychotherapeutic and pharmacologic approaches to PD and PTSD is that neither address the role of respiratory physiology and breathing style,” the investigators note.

The most widely studied treatment for PTSD is trauma-focused psychotherapy, in which the patient reviews and revisits the trauma, but it has a high dropout rate, study investigator Michael Telch, PhD, director of the Laboratory for the Study of Anxiety Disorders, University of Texas, Austin, told this news organization.

He described CGRI for PTSD as a “relatively new kid on the block, so to speak.” The intervention was cleared by the U.S. Food and Drug Administration for treatment of PD and PTSD in 2013 and 2018, respectively, and is currently available through the Veterans Administration for veterans with PTSD. It is also covered by some commercial insurance plans.

“The underlying assumption [of CGRI] is that a person can learn to develop skills for controlling some of their physiological reactions that are triggered as a result of trauma,” said Dr. Telch.

The device uses a biofeedback approach to give patients “greater control over their physiological reactions, such as hyperventilation and increased respiration rate, and the focus is on providing a sense of mastery,” he said.

Participants with PTSD were assigned to a health coach. The device was delivered to the patient’s home, and patients met with the trained coach weekly and could check in between visits via text or e-mail. Twice-daily sessions were recommended.

“The coach gets feedback about what’s happening with the patient’s respiration and end-tidal CO₂ levels [etCO₂] and instructs participants how to keep their respiration rate and etCO₂ at a more normal level,” said Dr. Telch.

The CGRI “teaches a specific breathing style via a system providing real-time feedback of respiratory rate (RR) and exhaled carbon dioxide levels facilitated by data capture,” the authors note.
 

Sense of mastery

Of the 1,569 participants, 1,395 had PD and 174 had PTSD (mean age, 39.2 [standard deviation, 13.9] years and 40.9 [SD, 14.9] years, respectively; 76% and 73% female, respectively). Those with PD completed the Panic Disorder Severity Scale (PDSS) and those with PTSD completed the Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5), before and after the intervention.

The treatment response rate for PD was defined as a 40% or greater reduction in PDSS total scores, whereas treatment response rate for PTSD was defined as a 10-point or greater reduction in PCL-5 scores.

At baseline, patients were classified either as normocapnic or hypocapnic (etCO₂ ≥ 37 or < 37, respectively), with 65% classified as normocapnic and 35% classified as hypocapnic.

Among patients with PD, there was a 50.2% mean pre- to posttreatment reduction in total PDSS scores (P < .001; d = 1.31), with a treatment response rate of 65.3% of patients.

Among patients with PTSD, there was a 41.1% pre- to posttreatment reduction in total PCL-5 scores (P < .001; d = 1.16), with a treatment response rate of 72.4%.

When investigators analyzed the response at the individual level, they found that 55.7% of patients with PD and 53.5% of those with PTSD were classified as treatment responders. This determination was based on a two-pronged approach that first calculated the Reliable Change Index (RCI) for each participant, and, in participants showing statistically reliable improvement, whether the posttreatment score was closer to the distribution of scores for patients without or with the given disorder.

“Patients with both normal and below-normal baseline exhaled CO2 levels experienced comparable benefit,” the authors report.

‘A viable alternative’

Commenting on the research, Charles Marmar, MD, chair and Peter H. Schub Professor of Psychiatry, department of psychiatry, New York University, said that the study has some limitations, probably the most significant of which is that most participants had normal baseline CO₂ levels.

“The treatment is fundamentally designed for people who hyperventilate and blow off too much CO₂ so they can breathe in a more calm, relaxed way, but most people in the trial had normal CO₂ to begin with,” said Dr. Marmar, who was not involved with the study.

“It’s likely that the major benefits were the relaxation from doing the breathing exercises rather than the change in CO₂ levels,” he speculated.

The treatment is “probably a good thing for those patients who actually have abnormal CO₂ levels. This treatment could be used in precision medicine, where you tailor treatments to those who actually need them rather than giving the same treatment to everyone,” he said.

“For patients who don’t respond to trauma-focused therapy or it’s too aversive for them to undergo, this new intervention provides a viable alternative,” Dr. Telch added.

The study was internally funded by Freespira. Dr. Telch is a scientific advisor at Freespira and receives compensation by way of stock options. The other authors’ disclosures are listed on the original paper. Dr. Marmar has declared no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A digital intervention may offer a new and effective treatment option for panic disorder (PD) and posttraumatic stress disorder, new research suggests.

The 28-day home-based treatment, known as the capnometry guided respiratory intervention (CGRI), uses an app-based feedback protocol to normalize respiration and increase patients’ ability to cope with symptoms of stress, anxiety, and panic by providing real time breath-to-breath feedback of respiratory rate and carbon dioxide (CO₂) levels via a nasal cannula.

Freespira

Results from the large real-world study showed that over 65% of patients with PD and over 72% of those with PTSD responded to the treatment. In addition, almost 75% of participants adhered to the study protocol, with low dropout rates.

“The brief duration of treatment, high adherence rates, and clinical benefit suggests that CGRI provides an important addition to treatment options for PD and PTSD,” the investigators write.

The study was published online in Frontiers in Digital Health.
 

‘New kid on the block’

The “respiratory dysregulation hypothesis” links CO₂ sensitivity to panic attacks and PD, and similar reactivity has been identified in PTSD, but a “common limitation of psychotherapeutic and pharmacologic approaches to PD and PTSD is that neither address the role of respiratory physiology and breathing style,” the investigators note.

The most widely studied treatment for PTSD is trauma-focused psychotherapy, in which the patient reviews and revisits the trauma, but it has a high dropout rate, study investigator Michael Telch, PhD, director of the Laboratory for the Study of Anxiety Disorders, University of Texas, Austin, told this news organization.

He described CGRI for PTSD as a “relatively new kid on the block, so to speak.” The intervention was cleared by the U.S. Food and Drug Administration for treatment of PD and PTSD in 2013 and 2018, respectively, and is currently available through the Veterans Administration for veterans with PTSD. It is also covered by some commercial insurance plans.

“The underlying assumption [of CGRI] is that a person can learn to develop skills for controlling some of their physiological reactions that are triggered as a result of trauma,” said Dr. Telch.

The device uses a biofeedback approach to give patients “greater control over their physiological reactions, such as hyperventilation and increased respiration rate, and the focus is on providing a sense of mastery,” he said.

Participants with PTSD were assigned to a health coach. The device was delivered to the patient’s home, and patients met with the trained coach weekly and could check in between visits via text or e-mail. Twice-daily sessions were recommended.

“The coach gets feedback about what’s happening with the patient’s respiration and end-tidal CO₂ levels [etCO₂] and instructs participants how to keep their respiration rate and etCO₂ at a more normal level,” said Dr. Telch.

The CGRI “teaches a specific breathing style via a system providing real-time feedback of respiratory rate (RR) and exhaled carbon dioxide levels facilitated by data capture,” the authors note.
 

Sense of mastery

Of the 1,569 participants, 1,395 had PD and 174 had PTSD (mean age, 39.2 [standard deviation, 13.9] years and 40.9 [SD, 14.9] years, respectively; 76% and 73% female, respectively). Those with PD completed the Panic Disorder Severity Scale (PDSS) and those with PTSD completed the Posttraumatic Stress Disorder Checklist for DSM-5 (PCL-5), before and after the intervention.

The treatment response rate for PD was defined as a 40% or greater reduction in PDSS total scores, whereas treatment response rate for PTSD was defined as a 10-point or greater reduction in PCL-5 scores.

At baseline, patients were classified either as normocapnic or hypocapnic (etCO₂ ≥ 37 or < 37, respectively), with 65% classified as normocapnic and 35% classified as hypocapnic.

Among patients with PD, there was a 50.2% mean pre- to posttreatment reduction in total PDSS scores (P < .001; d = 1.31), with a treatment response rate of 65.3% of patients.

Among patients with PTSD, there was a 41.1% pre- to posttreatment reduction in total PCL-5 scores (P < .001; d = 1.16), with a treatment response rate of 72.4%.

When investigators analyzed the response at the individual level, they found that 55.7% of patients with PD and 53.5% of those with PTSD were classified as treatment responders. This determination was based on a two-pronged approach that first calculated the Reliable Change Index (RCI) for each participant, and, in participants showing statistically reliable improvement, whether the posttreatment score was closer to the distribution of scores for patients without or with the given disorder.

“Patients with both normal and below-normal baseline exhaled CO2 levels experienced comparable benefit,” the authors report.

‘A viable alternative’

Commenting on the research, Charles Marmar, MD, chair and Peter H. Schub Professor of Psychiatry, department of psychiatry, New York University, said that the study has some limitations, probably the most significant of which is that most participants had normal baseline CO₂ levels.

“The treatment is fundamentally designed for people who hyperventilate and blow off too much CO₂ so they can breathe in a more calm, relaxed way, but most people in the trial had normal CO₂ to begin with,” said Dr. Marmar, who was not involved with the study.

“It’s likely that the major benefits were the relaxation from doing the breathing exercises rather than the change in CO₂ levels,” he speculated.

The treatment is “probably a good thing for those patients who actually have abnormal CO₂ levels. This treatment could be used in precision medicine, where you tailor treatments to those who actually need them rather than giving the same treatment to everyone,” he said.

“For patients who don’t respond to trauma-focused therapy or it’s too aversive for them to undergo, this new intervention provides a viable alternative,” Dr. Telch added.

The study was internally funded by Freespira. Dr. Telch is a scientific advisor at Freespira and receives compensation by way of stock options. The other authors’ disclosures are listed on the original paper. Dr. Marmar has declared no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Psychedelics are a class of substances known to produce alterations in consciousness and perception. In the last 2 decades, psychedelic research has garnered increasing attention from scientists, therapists, entrepreneurs, and the public. While many of these compounds remain illegal in the United States and in many parts of the world (Box¹), a recent resurrection of psychedelic research has motivated the FDA to designate multiple psychedelic compounds as “breakthrough therapies,” thereby expediting the investigation, development, and review of psychedelic treatments.

Box

There is growing evidence that psychedelics may be efficacious for treating a range of psychiatric disorders. Potential clinical indications for psychedelics include some forms of depression, posttraumatic stress disorder (PTSD), and substance use disorders (Table 1^2,3). In most instances, the clinical use of psychedelics is being investigated and offered in the context of psychedelic-assisted psychotherapy, though ketamine is a prominent exception. Ketamine and esketamine are already being used to treat depression, and FDA approval is anticipated for other psychedelics. An examination of the safety considerations of psychedelics for the treatment of psychiatric disorders is therefore highly relevant and timely.

This article examines the adverse effect profile of classical (psilocybin [“mushrooms”], lysergic acid diethylamide [LSD], and N,N-dimethyltryptamine [DMT]/ayahuasca) and nonclassical (the entactogen 3,4-methylenedioxymethamphetamine [MDMA, known as “ecstasy”] and the dissociative anesthetic ketamine) psychedelics.

Psilocybin

Psilocybin is typically administered as a single dose of 10 to 30 mg and used in conjunction with preintegration and postintegration psychotherapy. Administration of psilocybin typically produces perceptual distortions and mind-altering effects, which are mediated through 5-HT2A brain receptor agonistic action.⁴ The acute effects last approximately 6 hours.⁵ While psilocybin has generated promising results in early clinical trials,³ the adverse effects of these agents have received less attention.

The adverse effect profile of psilocybin in adults appears promising but its powerful psychoactive effects necessitate cautious use.⁶ It has a very wide therapeutic index, and in a recent meta-analysis of psilocybin for depression, no serious adverse effects were reported in any of the 7 included studies.⁷ Common adverse effects in the context of clinical use include anxiety, dysphoria, confusion, and an increase in blood pressure and heart rate.⁶ Due to potential cardiac effects, psilocybin is contraindicated in individuals with cardiovascular and cerebrovascular disease.⁸ In recreational/nonclinical use, reactions such as suicidality, violence, convulsions, panic attacks, paranoia, confusion, prolonged dissociation, and mania have been reported.^9,10 Animal and human studies indicate the risk of abuse and physical dependence is low. Major national surveys indicate low rates of abuse, treatment-seeking, and harm.¹¹ In a recent 6-week randomized controlled trial (RCT) of psilocybin vs escitalopram for depression,¹² no serious adverse events were reported. Adverse events reported in the psilocybin group in this trial are listed in Table 2.¹²

A recent phase 2 double-blind trial of single-dose psilocybin (1 mg, 10 mg, and 25 mg) for treatment-resistant depression (N = 233) sheds more light on the risk of adverse effects.¹³ The percentage of individuals experiencing adverse effects on Day 1 of administration was high: 61% in the 25 mg psilocybin group. Headache, nausea, fatigue, and dizziness were the most common effects. The incidence of any adverse event in the 25 mg group was 56% from Day 2 to Week 3, and 29% from Week 3 to Week 12. Suicidal ideation, suicidal behavior, or self-injury occurred in all 3 dose groups. Overall, 14% in the 25 mg group, 17% in the 10 mg group, and 9% in the 1 mg group showed worsening of suicidality from baseline to Week 3. Suicidal behavior was reported by 3 individuals in the 25 mg group after Week 3. The new-onset or worsening of preexisting suicidality with psilocybin reported in this study requires further investigation.

Lysergic acid diethylamide

LSD is similar to psilocybin in its agonistic action at the 5-HT2A brain receptors.⁴ It is typically administered as a single 100 to 200 μg dose and is used in conjunction with preintegration and postintegration psychotherapy.¹⁴ Its acute effects last approximately 12 hours.¹⁵

Continue to: Like psilocybin...

Like psilocybin, LSD has a wide therapeutic index. Commonly reported adverse effects of LSD are increased anxiety, dysphoria, and confusion. LSD can also lead to physiological adverse effects, such as increased blood pressure and heart rate, and thus is contraindicated in patients with severe heart disease.⁶ In a systematic review of the therapeutic use of LSD that included 567 participants,¹⁶ 2 cases of serious adverse events were reported: a tonic-clonic seizure in a patient with a prior history of seizures, and a case of prolonged psychosis in a 21-year-old with a history of psychotic disorder.

Though few psychedelic studies have examined the adverse effects of these agents in older adults, a recent phase 1 study that recruited 48 healthy older adults (age 55 to 75) found that, compared to placebo, low doses (5 to 20 μg) of LSD 2 times a week for 3 weeks had similar adverse effects, cognitive impairment, or balance impairment.¹⁷ The only adverse effect noted to be different between the placebo group and active treatment groups was headache (50% for LSD 10 μg, 25% for LSD 20 μg, and 8% for placebo). Because the dose range (5 to 20 μg) used in this study was substantially lower than the typical therapeutic dose range of 100 to 200 μg, these results should not be interpreted as supporting the safety of LSD at higher doses in older adults.

DMT/ayahuasca

Ayahuasca is a plant-based psychedelic that contains an admixture of substances, including DMT, which acts as a 5-HT2A receptor agonist. In addition to DMT, ayahuasca also contains the alkaloid harmaline, which acts as a monoamine inhibitor. Use of ayahuasca can therefore pose a particular risk for individuals taking other serotonergic or noradrenergic medications or substances. The acute effects of DMT last approximately 4 hours,¹⁸ and acute administration of ayahuasca leads to a transient modified state of consciousness that is characterized by introspection, visions, enhanced emotions, and recall of personal memories.¹⁹ Research shows ayahuasca has been dosed at approximately 0.36 mg/kg of DMT for 1 dosing session alongside 6 2-hour therapy sessions.²⁰

A recent review by Orsolini et al²¹ consolidated 40 preclinical, observational, and experimental studies of ayahuasca, and this compound appeared to be safe and well-tolerated; the most common adverse effects were transient emesis and nausea. In an RCT by Palhano-Fontes et al,²⁰ nausea was observed in 71% of participants in the ayahuasca group (vs 26% placebo), vomiting in 57% of participants (vs 0% placebo), and restlessness in 50% of participants (vs 20% placebo). The authors noted that for some participants the ayahuasca session “was not necessarily a pleasant experience,” and was accompanied by psychological distress.²⁰ Vomiting is traditionally viewed as an expected part of the purging process of ayahuasca religious ceremonies. Another review found that there appears to be good long-term tolerability of ayahuasca consumption among individuals who use this compound in religious ceremonies.²²

MDMA

Entactogens (or empathogens) are a class of psychoactive substances that produce experiences of emotional openness and connection. MDMA is an entactogen known to release serotonin, norepinephrine, and dopamine by inhibiting reuptake.²³ This process leads to the stimulation of neurohormonal signaling of oxytocin, cortisol, and other signaling molecules such as brain-derived neurotrophic factor.²⁴ Memory reconsolidation and fear extinction may also play a therapeutic role, enabled by reduced activity in the amygdala and insula, and increased connectivity between the amygdala and hippocampus.²⁴ MDMA has been reported to enhance feelings of well-being and increase prosocial behavior.²⁵ In the therapeutic setting, MDMA has been generally dosed at 75 to 125 mg in 2 to 3 sessions alongside 10 therapy sessions. Administration of MDMA gives the user a subjective experience of energy and distortions in time and perception.²⁶ These acute effects last approximately 2 to 4 hours.²⁷

Continue to: A meta-analysis...

A meta-analysis of 5 RCTs of MDMA-assisted therapy for PTSD in adults demonstrated that MDMA was well-tolerated, and few serious adverse events were reported.²⁸ Two trials from 2018 that were included in this meta-analysis—Mithoefer et al²⁹ and Ot’alora et al³⁰—illustrate the incidence of specific adverse effects. In a randomized, double-blind trial of 26 veterans and first responders with chronic PTSD, Mithoefer et al²⁹ found the most commonly reported reactions during experimental sessions with MDMA were anxiety (81%), headache (69%), fatigue (62%), muscle tension (62%), and jaw clenching or tight jaw (50%). The most commonly reported reactions during 7 days of contact were fatigue (88%), anxiety (73%), insomnia (69%), headache (46%), muscle tension (46%), and increased irritability (46%). One instance of suicidal ideation was severe enough to require psychiatric hospitalization (this was the only instance of suicidal ideation among the 106 patients in the meta-analysis by Bahji et al²⁸); the patient subsequently completed the trial. Transient elevation in pulse, blood pressure, and body temperature were noted during sessions that did not require medical intervention.²⁹ Ot’alora et al³⁰ found similar common adverse reactions: anxiety, dizziness, fatigue, headache, jaw clenching, muscle tension, and irritability. There were no serious adverse effects.

While the use of MDMA in controlled interventional settings has resulted in relatively few adverse events, robust literature describes the risks associated with the nonclinical/recreational use of MDMA. In cases of MDMA toxicity, death has been reported.³¹ Acutely, MDMA may lead to sympathomimetic effects, including serotonin syndrome.³¹ Longer-term studies of MDMA users have found chronic recreational use to be associated with worse sleep, poor mood, anxiety disturbances, memory deficits, and attention problems.³² MDMA has also been found to have moderate potential for abuse.³³

Ketamine/esketamine

Ketamine is a dissociative anesthetic with some hallucinogenic effects. It is an N-methyl-d-aspartate (NMDA) antagonist frequently used in anesthesia, and it can induce a state of sedation, immobility, pain relief, and amnesia. In low doses, ketamine is used off-label to treat major depressive disorder and treatment-resistant depression. Most clinical trials of ketamine for depression have dosed IV ketamine from 0.5 to 1 mg/kg 1 to 3 times a week. It can also be administered as an IM, intranasal, oral, subcutaneous, or sublingual formulation.³⁴

Esketamine, the S(+)-enantiomer of ketamine, is also an NDMA antagonist. It has been developed as an intranasal formulation, typically dosed between 56 and 84 mg 2 times a week for 1 month, once a week for the following month, and once every 1 to 2 weeks thereafter.³⁵ In most ketamine and esketamine trials, these compounds have been used without psychotherapy, although some interventions have integrated psychotherapy with ketamine treatment.³⁶

Bennett et al³⁷ elaborated on 3 paradigms for ketamine treatment: biochemical, psychotherapeutic, and psychedelic. The biochemical model examines the neuro­biological effects of the medication. The psychotherapeutic model views ketamine as a way of assisting the psychotherapy process. The psychedelic model utilizes ketamine’s dissociative and psychedelic properties to induce an altered state of consciousness for therapeutic purposes and psychospiritual exploration.

Continue to: A systematic review...

A systematic review of the common adverse effects associated with ketamine use in clinical trials for depression reported dissociation, sedation, perceptual disturbances, anxiety, agitation, euphoria, hypertension, tachycardia, headache, and dizziness.³⁸ Adverse effects experienced with esketamine in clinical trials include dissociation, dizziness, sedation, hypertension, hypoesthesia, gastrointestinal symptoms, and euphoric mood (Table 3³⁹). A recent systemic review found both ketamine and esketamine demonstrated higher adverse events than control conditions. IV ketamine also demonstrated lower dropouts and adverse events when compared to intranasal esketamine.⁴⁰

Nonclinical/recreational use of ketamine is notable for urinary toxicity; 20% to 30% of frequent users of ketamine experience urinary problems that can range from ketamine-induced cystitis to hydronephrosis and kidney failure.⁴¹ Liver toxicity has also been reported with chronic use of high-dose ketamine. Ketamine is liable to abuse, dependence, and tolerance. There is evidence that nonclinical use of ketamine may lead to morbidity; impairment of memory, cognition, and attention; and urinary, gastric, and hepatic pathology.⁴²

The FDA prescribing information for esketamine lists aneurysmal vascular disease, arteriovenous malformation, and intracerebral hemorrhage as contraindications.³⁹ Patients with cardiovascular and cerebrovascular conditions and risk factors may be at increased risk of adverse effects due to an increase in blood pressure. Esketamine can impair attention, judgment, thinking, reaction speed, and motor skills. Other adverse effects of esketamine noted in the prescribing information include dissociation, dizziness, nausea, sedation, vertigo, hypoesthesia, anxiety, lethargy, vomiting, feeling drunk, and euphoric mood.³⁹A study of postmarketing safety concerns with esketamine using reports submitted to the FDA Adverse Event Reporting System (FAERS) revealed signals for suicidal ideation (reporting odds ratio [ROR] 24.03; 95% CI, 18.72 to 30.84), and completed suicide (ROR 5.75; 95% CI, 3.18 to 10.41).⁴³ The signals for suicidal and self-injurious ideation remained significant when compared to venlafaxine in the FAERS database, while suicide attempts and fatal suicide attempts were no longer significant.⁴³ Concerns regarding acute ketamine withdrawal have also been described in case reports.⁴⁴

Other safety considerations of psychedelics

Hallucinogen persisting perception disorder

Hallucinogen persisting perception disorder (HPPD) is a rare condition associated with hallucinogen use. It is characterized by the recurrence of perceptual disturbances that an individual experienced while using hallucinogenic substances that creates significant distress or impairment.⁴⁵ Because HPPD is a rare disorder, the exact prevalence is not well characterized, but DSM-5 suggests it is approximately 4.2%.⁴⁶ HPPD is associated with numerous psychoactive substances, including psilocybin, ayahuasca, MDMA, and ketamine, but is most associated with LSD.⁴⁵ HPPD is more likely to arise in individuals with histories of psychiatric illness or substance use disorders.⁴⁷

Serotonin toxicity and other serotonergic interactions

Serotonin toxicity is a risk of serotonergic psychedelics, particularly when such agents are used in combination with serotonergic psychotropic medications. The most severe manifestation of serotonin toxicity is serotonin syndrome, which manifests as a life-threatening condition characterized by myoclonus, rigidity, agitation, delirium, and unstable cardiovascular functioning. Many psychedelic compounds have transient serotonin-related adverse effects, but serotonin toxicity due to psychedelic use is rare.⁴⁸ Due to their mechanism of action, classical psychedelics are relatively safe in combination with monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors. MDMA is a serotonin-releasing agent that has a higher risk of serotonin syndrome or hypertensive crisis when used in combination with MAOIs.⁴⁸

Boundary violations in psychedelic-assisted psychotherapy

A key task facing psychedelic research is to establish parameters for the safe and ethical use of these agents. This is particularly relevant given the hype that surrounds the psychedelic resurgence and what we know about the controversial history of these substances. Anderson et al⁴⁹ argued that “psychedelics can have lingering effects that include increased suggestibility and affective instability, as well as altered ego structure, social behaviour, and philosophical worldview. Stated simply, psychedelics can induce a vulnerable state both during and after treatment sessions.”

Continue to: Psychedelic treatment...

Psychedelic treatments such as psilocybin and MDMA are typically offered within the context of psychedelic-assisted psychotherapy, and some researchers have raised concerns regarding boundary violations,⁵⁰ given the patients’ particularly vulnerable states. In addition to concerns about sexual harassment, the financial exploitation of older adults is also a possible risk.⁵¹

Caveats to consider

Novel psychedelics therapies have demonstrated promising preliminary results for a broad range of psychiatric indications, including depression, end-of-life distress, substance use disorders, PTSD, and improving well-being. To date, psychedelics are generally well-tolerated in adults in clinical trials.

However, when it comes to adverse effects, there are challenges in regards to interpreting the psychedelic state.⁵² Some consider any unpleasant or unsettling psychedelic experience as an adverse reaction, while others consider it part of the therapeutic process. This is exemplified by the case of vomiting during ayahuasca ceremonies, which is generally considered part of the ritual. In such instances, it is essential to obtain informed consent and ensure participants are aware of these aspects of the experience. Compared to substances such as alcohol, opioids, and cocaine, psychedelics are remarkably safe from a physiological perspective, especially with regards to the risks of toxicity, mortality, and dependence.⁵³ Their psychological safety is less established, and more caution and research is needed. The high incidence of adverse effects and suicidality noted in the recent phase 2 trial of psilocybin in treatment resistant depression are a reminder of this.¹³

There is uncertainty regarding the magnitude of risk in real-world clinical practice, particularly regarding addiction, suicidality, and precipitation or worsening of psychotic disorders. For example, note the extensive exclusion criteria used in the psilocybin vs escitalopram RCT by Carhart-Harris et al¹²: currently or previously diagnosed psychotic disorder, immediate family member with a diagnosed psychotic disorder, significant medical comorbidity (eg, diabetes, epilepsy, severe cardiovascular disease, hepatic or renal failure), history of suicide attempts requiring hospitalization, history of mania, pregnancy, and abnormal QT interval prolongation, among others. It would be prudent to keep these contraindications in mind regarding the clinical use of psychedelics in the future. This is particularly important in older adults because such patients often have substantial medical comorbidities and are at greater risk for adverse effects. For ketamine, research has implicated the role of mu opioid agonism in mediating ketamine’s antidepressant effects.⁵⁴ This raises concerns about abuse, dependence, and addiction, especially with long-term use. There are also concerns regarding protracted withdrawal symptoms and associated suicidality.⁵⁵

The therapeutic use of psychedelics is an exciting and promising avenue, with ongoing research and a rapidly evolving literature. An attitude of cautious optimism is warranted, but efficacy and safety should be demonstrated in well-designed and rigorous trials with adequate long-term follow-up before routine clinical use is recommended.

Bottom Line

In clinical trials for psychiatric disorders, psychedelics have been associated with a range of cognitive, psychiatric, and psychoactive adverse effects but generally have been well-tolerated, with a low incidence of serious adverse effects.

Related Resources

• American Psychiatric Association. Position Statement on the Use of Psychedelic and Empathogenic Agents for Mental Health Conditions. Updated July 2022. Accessed October 24, 2022. https://www.psychiatry.org/getattachment/d5c13619-ca1f-491f-a7a8-b7141c800904/Position-Use-of-Psychedelic-Empathogenic-Agents.pdf
• Johns Hopkins Center for Psychedelic & Consciousness Research. https://hopkinspsychedelic.org/
• Multidisciplinary Association for Psychedelic Studies (MAPS). https://maps.org/

Drug Brand Names

Esketamine • Spravato
Ketamine • Ketalar
Venlafaxine • Effexor

Psychedelics are a class of substances known to produce alterations in consciousness and perception. In the last 2 decades, psychedelic research has garnered increasing attention from scientists, therapists, entrepreneurs, and the public. While many of these compounds remain illegal in the United States and in many parts of the world (Box¹), a recent resurrection of psychedelic research has motivated the FDA to designate multiple psychedelic compounds as “breakthrough therapies,” thereby expediting the investigation, development, and review of psychedelic treatments.

Box

There is growing evidence that psychedelics may be efficacious for treating a range of psychiatric disorders. Potential clinical indications for psychedelics include some forms of depression, posttraumatic stress disorder (PTSD), and substance use disorders (Table 1^2,3). In most instances, the clinical use of psychedelics is being investigated and offered in the context of psychedelic-assisted psychotherapy, though ketamine is a prominent exception. Ketamine and esketamine are already being used to treat depression, and FDA approval is anticipated for other psychedelics. An examination of the safety considerations of psychedelics for the treatment of psychiatric disorders is therefore highly relevant and timely.

This article examines the adverse effect profile of classical (psilocybin [“mushrooms”], lysergic acid diethylamide [LSD], and N,N-dimethyltryptamine [DMT]/ayahuasca) and nonclassical (the entactogen 3,4-methylenedioxymethamphetamine [MDMA, known as “ecstasy”] and the dissociative anesthetic ketamine) psychedelics.

Psilocybin

Psilocybin is typically administered as a single dose of 10 to 30 mg and used in conjunction with preintegration and postintegration psychotherapy. Administration of psilocybin typically produces perceptual distortions and mind-altering effects, which are mediated through 5-HT2A brain receptor agonistic action.⁴ The acute effects last approximately 6 hours.⁵ While psilocybin has generated promising results in early clinical trials,³ the adverse effects of these agents have received less attention.

The adverse effect profile of psilocybin in adults appears promising but its powerful psychoactive effects necessitate cautious use.⁶ It has a very wide therapeutic index, and in a recent meta-analysis of psilocybin for depression, no serious adverse effects were reported in any of the 7 included studies.⁷ Common adverse effects in the context of clinical use include anxiety, dysphoria, confusion, and an increase in blood pressure and heart rate.⁶ Due to potential cardiac effects, psilocybin is contraindicated in individuals with cardiovascular and cerebrovascular disease.⁸ In recreational/nonclinical use, reactions such as suicidality, violence, convulsions, panic attacks, paranoia, confusion, prolonged dissociation, and mania have been reported.^9,10 Animal and human studies indicate the risk of abuse and physical dependence is low. Major national surveys indicate low rates of abuse, treatment-seeking, and harm.¹¹ In a recent 6-week randomized controlled trial (RCT) of psilocybin vs escitalopram for depression,¹² no serious adverse events were reported. Adverse events reported in the psilocybin group in this trial are listed in Table 2.¹²

A recent phase 2 double-blind trial of single-dose psilocybin (1 mg, 10 mg, and 25 mg) for treatment-resistant depression (N = 233) sheds more light on the risk of adverse effects.¹³ The percentage of individuals experiencing adverse effects on Day 1 of administration was high: 61% in the 25 mg psilocybin group. Headache, nausea, fatigue, and dizziness were the most common effects. The incidence of any adverse event in the 25 mg group was 56% from Day 2 to Week 3, and 29% from Week 3 to Week 12. Suicidal ideation, suicidal behavior, or self-injury occurred in all 3 dose groups. Overall, 14% in the 25 mg group, 17% in the 10 mg group, and 9% in the 1 mg group showed worsening of suicidality from baseline to Week 3. Suicidal behavior was reported by 3 individuals in the 25 mg group after Week 3. The new-onset or worsening of preexisting suicidality with psilocybin reported in this study requires further investigation.

Lysergic acid diethylamide

LSD is similar to psilocybin in its agonistic action at the 5-HT2A brain receptors.⁴ It is typically administered as a single 100 to 200 μg dose and is used in conjunction with preintegration and postintegration psychotherapy.¹⁴ Its acute effects last approximately 12 hours.¹⁵

Continue to: Like psilocybin...

Like psilocybin, LSD has a wide therapeutic index. Commonly reported adverse effects of LSD are increased anxiety, dysphoria, and confusion. LSD can also lead to physiological adverse effects, such as increased blood pressure and heart rate, and thus is contraindicated in patients with severe heart disease.⁶ In a systematic review of the therapeutic use of LSD that included 567 participants,¹⁶ 2 cases of serious adverse events were reported: a tonic-clonic seizure in a patient with a prior history of seizures, and a case of prolonged psychosis in a 21-year-old with a history of psychotic disorder.

Though few psychedelic studies have examined the adverse effects of these agents in older adults, a recent phase 1 study that recruited 48 healthy older adults (age 55 to 75) found that, compared to placebo, low doses (5 to 20 μg) of LSD 2 times a week for 3 weeks had similar adverse effects, cognitive impairment, or balance impairment.¹⁷ The only adverse effect noted to be different between the placebo group and active treatment groups was headache (50% for LSD 10 μg, 25% for LSD 20 μg, and 8% for placebo). Because the dose range (5 to 20 μg) used in this study was substantially lower than the typical therapeutic dose range of 100 to 200 μg, these results should not be interpreted as supporting the safety of LSD at higher doses in older adults.

DMT/ayahuasca

Ayahuasca is a plant-based psychedelic that contains an admixture of substances, including DMT, which acts as a 5-HT2A receptor agonist. In addition to DMT, ayahuasca also contains the alkaloid harmaline, which acts as a monoamine inhibitor. Use of ayahuasca can therefore pose a particular risk for individuals taking other serotonergic or noradrenergic medications or substances. The acute effects of DMT last approximately 4 hours,¹⁸ and acute administration of ayahuasca leads to a transient modified state of consciousness that is characterized by introspection, visions, enhanced emotions, and recall of personal memories.¹⁹ Research shows ayahuasca has been dosed at approximately 0.36 mg/kg of DMT for 1 dosing session alongside 6 2-hour therapy sessions.²⁰

A recent review by Orsolini et al²¹ consolidated 40 preclinical, observational, and experimental studies of ayahuasca, and this compound appeared to be safe and well-tolerated; the most common adverse effects were transient emesis and nausea. In an RCT by Palhano-Fontes et al,²⁰ nausea was observed in 71% of participants in the ayahuasca group (vs 26% placebo), vomiting in 57% of participants (vs 0% placebo), and restlessness in 50% of participants (vs 20% placebo). The authors noted that for some participants the ayahuasca session “was not necessarily a pleasant experience,” and was accompanied by psychological distress.²⁰ Vomiting is traditionally viewed as an expected part of the purging process of ayahuasca religious ceremonies. Another review found that there appears to be good long-term tolerability of ayahuasca consumption among individuals who use this compound in religious ceremonies.²²

MDMA

Entactogens (or empathogens) are a class of psychoactive substances that produce experiences of emotional openness and connection. MDMA is an entactogen known to release serotonin, norepinephrine, and dopamine by inhibiting reuptake.²³ This process leads to the stimulation of neurohormonal signaling of oxytocin, cortisol, and other signaling molecules such as brain-derived neurotrophic factor.²⁴ Memory reconsolidation and fear extinction may also play a therapeutic role, enabled by reduced activity in the amygdala and insula, and increased connectivity between the amygdala and hippocampus.²⁴ MDMA has been reported to enhance feelings of well-being and increase prosocial behavior.²⁵ In the therapeutic setting, MDMA has been generally dosed at 75 to 125 mg in 2 to 3 sessions alongside 10 therapy sessions. Administration of MDMA gives the user a subjective experience of energy and distortions in time and perception.²⁶ These acute effects last approximately 2 to 4 hours.²⁷

Continue to: A meta-analysis...

A meta-analysis of 5 RCTs of MDMA-assisted therapy for PTSD in adults demonstrated that MDMA was well-tolerated, and few serious adverse events were reported.²⁸ Two trials from 2018 that were included in this meta-analysis—Mithoefer et al²⁹ and Ot’alora et al³⁰—illustrate the incidence of specific adverse effects. In a randomized, double-blind trial of 26 veterans and first responders with chronic PTSD, Mithoefer et al²⁹ found the most commonly reported reactions during experimental sessions with MDMA were anxiety (81%), headache (69%), fatigue (62%), muscle tension (62%), and jaw clenching or tight jaw (50%). The most commonly reported reactions during 7 days of contact were fatigue (88%), anxiety (73%), insomnia (69%), headache (46%), muscle tension (46%), and increased irritability (46%). One instance of suicidal ideation was severe enough to require psychiatric hospitalization (this was the only instance of suicidal ideation among the 106 patients in the meta-analysis by Bahji et al²⁸); the patient subsequently completed the trial. Transient elevation in pulse, blood pressure, and body temperature were noted during sessions that did not require medical intervention.²⁹ Ot’alora et al³⁰ found similar common adverse reactions: anxiety, dizziness, fatigue, headache, jaw clenching, muscle tension, and irritability. There were no serious adverse effects.

While the use of MDMA in controlled interventional settings has resulted in relatively few adverse events, robust literature describes the risks associated with the nonclinical/recreational use of MDMA. In cases of MDMA toxicity, death has been reported.³¹ Acutely, MDMA may lead to sympathomimetic effects, including serotonin syndrome.³¹ Longer-term studies of MDMA users have found chronic recreational use to be associated with worse sleep, poor mood, anxiety disturbances, memory deficits, and attention problems.³² MDMA has also been found to have moderate potential for abuse.³³

Ketamine/esketamine

Ketamine is a dissociative anesthetic with some hallucinogenic effects. It is an N-methyl-d-aspartate (NMDA) antagonist frequently used in anesthesia, and it can induce a state of sedation, immobility, pain relief, and amnesia. In low doses, ketamine is used off-label to treat major depressive disorder and treatment-resistant depression. Most clinical trials of ketamine for depression have dosed IV ketamine from 0.5 to 1 mg/kg 1 to 3 times a week. It can also be administered as an IM, intranasal, oral, subcutaneous, or sublingual formulation.³⁴

Esketamine, the S(+)-enantiomer of ketamine, is also an NDMA antagonist. It has been developed as an intranasal formulation, typically dosed between 56 and 84 mg 2 times a week for 1 month, once a week for the following month, and once every 1 to 2 weeks thereafter.³⁵ In most ketamine and esketamine trials, these compounds have been used without psychotherapy, although some interventions have integrated psychotherapy with ketamine treatment.³⁶

Bennett et al³⁷ elaborated on 3 paradigms for ketamine treatment: biochemical, psychotherapeutic, and psychedelic. The biochemical model examines the neuro­biological effects of the medication. The psychotherapeutic model views ketamine as a way of assisting the psychotherapy process. The psychedelic model utilizes ketamine’s dissociative and psychedelic properties to induce an altered state of consciousness for therapeutic purposes and psychospiritual exploration.

Continue to: A systematic review...

A systematic review of the common adverse effects associated with ketamine use in clinical trials for depression reported dissociation, sedation, perceptual disturbances, anxiety, agitation, euphoria, hypertension, tachycardia, headache, and dizziness.³⁸ Adverse effects experienced with esketamine in clinical trials include dissociation, dizziness, sedation, hypertension, hypoesthesia, gastrointestinal symptoms, and euphoric mood (Table 3³⁹). A recent systemic review found both ketamine and esketamine demonstrated higher adverse events than control conditions. IV ketamine also demonstrated lower dropouts and adverse events when compared to intranasal esketamine.⁴⁰

Nonclinical/recreational use of ketamine is notable for urinary toxicity; 20% to 30% of frequent users of ketamine experience urinary problems that can range from ketamine-induced cystitis to hydronephrosis and kidney failure.⁴¹ Liver toxicity has also been reported with chronic use of high-dose ketamine. Ketamine is liable to abuse, dependence, and tolerance. There is evidence that nonclinical use of ketamine may lead to morbidity; impairment of memory, cognition, and attention; and urinary, gastric, and hepatic pathology.⁴²

The FDA prescribing information for esketamine lists aneurysmal vascular disease, arteriovenous malformation, and intracerebral hemorrhage as contraindications.³⁹ Patients with cardiovascular and cerebrovascular conditions and risk factors may be at increased risk of adverse effects due to an increase in blood pressure. Esketamine can impair attention, judgment, thinking, reaction speed, and motor skills. Other adverse effects of esketamine noted in the prescribing information include dissociation, dizziness, nausea, sedation, vertigo, hypoesthesia, anxiety, lethargy, vomiting, feeling drunk, and euphoric mood.³⁹A study of postmarketing safety concerns with esketamine using reports submitted to the FDA Adverse Event Reporting System (FAERS) revealed signals for suicidal ideation (reporting odds ratio [ROR] 24.03; 95% CI, 18.72 to 30.84), and completed suicide (ROR 5.75; 95% CI, 3.18 to 10.41).⁴³ The signals for suicidal and self-injurious ideation remained significant when compared to venlafaxine in the FAERS database, while suicide attempts and fatal suicide attempts were no longer significant.⁴³ Concerns regarding acute ketamine withdrawal have also been described in case reports.⁴⁴

Other safety considerations of psychedelics

Hallucinogen persisting perception disorder

Hallucinogen persisting perception disorder (HPPD) is a rare condition associated with hallucinogen use. It is characterized by the recurrence of perceptual disturbances that an individual experienced while using hallucinogenic substances that creates significant distress or impairment.⁴⁵ Because HPPD is a rare disorder, the exact prevalence is not well characterized, but DSM-5 suggests it is approximately 4.2%.⁴⁶ HPPD is associated with numerous psychoactive substances, including psilocybin, ayahuasca, MDMA, and ketamine, but is most associated with LSD.⁴⁵ HPPD is more likely to arise in individuals with histories of psychiatric illness or substance use disorders.⁴⁷

Serotonin toxicity and other serotonergic interactions

Serotonin toxicity is a risk of serotonergic psychedelics, particularly when such agents are used in combination with serotonergic psychotropic medications. The most severe manifestation of serotonin toxicity is serotonin syndrome, which manifests as a life-threatening condition characterized by myoclonus, rigidity, agitation, delirium, and unstable cardiovascular functioning. Many psychedelic compounds have transient serotonin-related adverse effects, but serotonin toxicity due to psychedelic use is rare.⁴⁸ Due to their mechanism of action, classical psychedelics are relatively safe in combination with monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors. MDMA is a serotonin-releasing agent that has a higher risk of serotonin syndrome or hypertensive crisis when used in combination with MAOIs.⁴⁸

Boundary violations in psychedelic-assisted psychotherapy

A key task facing psychedelic research is to establish parameters for the safe and ethical use of these agents. This is particularly relevant given the hype that surrounds the psychedelic resurgence and what we know about the controversial history of these substances. Anderson et al⁴⁹ argued that “psychedelics can have lingering effects that include increased suggestibility and affective instability, as well as altered ego structure, social behaviour, and philosophical worldview. Stated simply, psychedelics can induce a vulnerable state both during and after treatment sessions.”

Continue to: Psychedelic treatment...

Psychedelic treatments such as psilocybin and MDMA are typically offered within the context of psychedelic-assisted psychotherapy, and some researchers have raised concerns regarding boundary violations,⁵⁰ given the patients’ particularly vulnerable states. In addition to concerns about sexual harassment, the financial exploitation of older adults is also a possible risk.⁵¹

Caveats to consider

Novel psychedelics therapies have demonstrated promising preliminary results for a broad range of psychiatric indications, including depression, end-of-life distress, substance use disorders, PTSD, and improving well-being. To date, psychedelics are generally well-tolerated in adults in clinical trials.

However, when it comes to adverse effects, there are challenges in regards to interpreting the psychedelic state.⁵² Some consider any unpleasant or unsettling psychedelic experience as an adverse reaction, while others consider it part of the therapeutic process. This is exemplified by the case of vomiting during ayahuasca ceremonies, which is generally considered part of the ritual. In such instances, it is essential to obtain informed consent and ensure participants are aware of these aspects of the experience. Compared to substances such as alcohol, opioids, and cocaine, psychedelics are remarkably safe from a physiological perspective, especially with regards to the risks of toxicity, mortality, and dependence.⁵³ Their psychological safety is less established, and more caution and research is needed. The high incidence of adverse effects and suicidality noted in the recent phase 2 trial of psilocybin in treatment resistant depression are a reminder of this.¹³

There is uncertainty regarding the magnitude of risk in real-world clinical practice, particularly regarding addiction, suicidality, and precipitation or worsening of psychotic disorders. For example, note the extensive exclusion criteria used in the psilocybin vs escitalopram RCT by Carhart-Harris et al¹²: currently or previously diagnosed psychotic disorder, immediate family member with a diagnosed psychotic disorder, significant medical comorbidity (eg, diabetes, epilepsy, severe cardiovascular disease, hepatic or renal failure), history of suicide attempts requiring hospitalization, history of mania, pregnancy, and abnormal QT interval prolongation, among others. It would be prudent to keep these contraindications in mind regarding the clinical use of psychedelics in the future. This is particularly important in older adults because such patients often have substantial medical comorbidities and are at greater risk for adverse effects. For ketamine, research has implicated the role of mu opioid agonism in mediating ketamine’s antidepressant effects.⁵⁴ This raises concerns about abuse, dependence, and addiction, especially with long-term use. There are also concerns regarding protracted withdrawal symptoms and associated suicidality.⁵⁵

The therapeutic use of psychedelics is an exciting and promising avenue, with ongoing research and a rapidly evolving literature. An attitude of cautious optimism is warranted, but efficacy and safety should be demonstrated in well-designed and rigorous trials with adequate long-term follow-up before routine clinical use is recommended.

Bottom Line

In clinical trials for psychiatric disorders, psychedelics have been associated with a range of cognitive, psychiatric, and psychoactive adverse effects but generally have been well-tolerated, with a low incidence of serious adverse effects.

Related Resources

• American Psychiatric Association. Position Statement on the Use of Psychedelic and Empathogenic Agents for Mental Health Conditions. Updated July 2022. Accessed October 24, 2022. https://www.psychiatry.org/getattachment/d5c13619-ca1f-491f-a7a8-b7141c800904/Position-Use-of-Psychedelic-Empathogenic-Agents.pdf
• Johns Hopkins Center for Psychedelic & Consciousness Research. https://hopkinspsychedelic.org/
• Multidisciplinary Association for Psychedelic Studies (MAPS). https://maps.org/

Drug Brand Names

Esketamine • Spravato
Ketamine • Ketalar
Venlafaxine • Effexor

Psychedelics are a class of substances known to produce alterations in consciousness and perception. In the last 2 decades, psychedelic research has garnered increasing attention from scientists, therapists, entrepreneurs, and the public. While many of these compounds remain illegal in the United States and in many parts of the world (Box¹), a recent resurrection of psychedelic research has motivated the FDA to designate multiple psychedelic compounds as “breakthrough therapies,” thereby expediting the investigation, development, and review of psychedelic treatments.

Box

There is growing evidence that psychedelics may be efficacious for treating a range of psychiatric disorders. Potential clinical indications for psychedelics include some forms of depression, posttraumatic stress disorder (PTSD), and substance use disorders (Table 1^2,3). In most instances, the clinical use of psychedelics is being investigated and offered in the context of psychedelic-assisted psychotherapy, though ketamine is a prominent exception. Ketamine and esketamine are already being used to treat depression, and FDA approval is anticipated for other psychedelics. An examination of the safety considerations of psychedelics for the treatment of psychiatric disorders is therefore highly relevant and timely.

This article examines the adverse effect profile of classical (psilocybin [“mushrooms”], lysergic acid diethylamide [LSD], and N,N-dimethyltryptamine [DMT]/ayahuasca) and nonclassical (the entactogen 3,4-methylenedioxymethamphetamine [MDMA, known as “ecstasy”] and the dissociative anesthetic ketamine) psychedelics.

Psilocybin

Psilocybin is typically administered as a single dose of 10 to 30 mg and used in conjunction with preintegration and postintegration psychotherapy. Administration of psilocybin typically produces perceptual distortions and mind-altering effects, which are mediated through 5-HT2A brain receptor agonistic action.⁴ The acute effects last approximately 6 hours.⁵ While psilocybin has generated promising results in early clinical trials,³ the adverse effects of these agents have received less attention.

The adverse effect profile of psilocybin in adults appears promising but its powerful psychoactive effects necessitate cautious use.⁶ It has a very wide therapeutic index, and in a recent meta-analysis of psilocybin for depression, no serious adverse effects were reported in any of the 7 included studies.⁷ Common adverse effects in the context of clinical use include anxiety, dysphoria, confusion, and an increase in blood pressure and heart rate.⁶ Due to potential cardiac effects, psilocybin is contraindicated in individuals with cardiovascular and cerebrovascular disease.⁸ In recreational/nonclinical use, reactions such as suicidality, violence, convulsions, panic attacks, paranoia, confusion, prolonged dissociation, and mania have been reported.^9,10 Animal and human studies indicate the risk of abuse and physical dependence is low. Major national surveys indicate low rates of abuse, treatment-seeking, and harm.¹¹ In a recent 6-week randomized controlled trial (RCT) of psilocybin vs escitalopram for depression,¹² no serious adverse events were reported. Adverse events reported in the psilocybin group in this trial are listed in Table 2.¹²

A recent phase 2 double-blind trial of single-dose psilocybin (1 mg, 10 mg, and 25 mg) for treatment-resistant depression (N = 233) sheds more light on the risk of adverse effects.¹³ The percentage of individuals experiencing adverse effects on Day 1 of administration was high: 61% in the 25 mg psilocybin group. Headache, nausea, fatigue, and dizziness were the most common effects. The incidence of any adverse event in the 25 mg group was 56% from Day 2 to Week 3, and 29% from Week 3 to Week 12. Suicidal ideation, suicidal behavior, or self-injury occurred in all 3 dose groups. Overall, 14% in the 25 mg group, 17% in the 10 mg group, and 9% in the 1 mg group showed worsening of suicidality from baseline to Week 3. Suicidal behavior was reported by 3 individuals in the 25 mg group after Week 3. The new-onset or worsening of preexisting suicidality with psilocybin reported in this study requires further investigation.

Lysergic acid diethylamide

LSD is similar to psilocybin in its agonistic action at the 5-HT2A brain receptors.⁴ It is typically administered as a single 100 to 200 μg dose and is used in conjunction with preintegration and postintegration psychotherapy.¹⁴ Its acute effects last approximately 12 hours.¹⁵

Continue to: Like psilocybin...

Like psilocybin, LSD has a wide therapeutic index. Commonly reported adverse effects of LSD are increased anxiety, dysphoria, and confusion. LSD can also lead to physiological adverse effects, such as increased blood pressure and heart rate, and thus is contraindicated in patients with severe heart disease.⁶ In a systematic review of the therapeutic use of LSD that included 567 participants,¹⁶ 2 cases of serious adverse events were reported: a tonic-clonic seizure in a patient with a prior history of seizures, and a case of prolonged psychosis in a 21-year-old with a history of psychotic disorder.

Though few psychedelic studies have examined the adverse effects of these agents in older adults, a recent phase 1 study that recruited 48 healthy older adults (age 55 to 75) found that, compared to placebo, low doses (5 to 20 μg) of LSD 2 times a week for 3 weeks had similar adverse effects, cognitive impairment, or balance impairment.¹⁷ The only adverse effect noted to be different between the placebo group and active treatment groups was headache (50% for LSD 10 μg, 25% for LSD 20 μg, and 8% for placebo). Because the dose range (5 to 20 μg) used in this study was substantially lower than the typical therapeutic dose range of 100 to 200 μg, these results should not be interpreted as supporting the safety of LSD at higher doses in older adults.

DMT/ayahuasca

Ayahuasca is a plant-based psychedelic that contains an admixture of substances, including DMT, which acts as a 5-HT2A receptor agonist. In addition to DMT, ayahuasca also contains the alkaloid harmaline, which acts as a monoamine inhibitor. Use of ayahuasca can therefore pose a particular risk for individuals taking other serotonergic or noradrenergic medications or substances. The acute effects of DMT last approximately 4 hours,¹⁸ and acute administration of ayahuasca leads to a transient modified state of consciousness that is characterized by introspection, visions, enhanced emotions, and recall of personal memories.¹⁹ Research shows ayahuasca has been dosed at approximately 0.36 mg/kg of DMT for 1 dosing session alongside 6 2-hour therapy sessions.²⁰

A recent review by Orsolini et al²¹ consolidated 40 preclinical, observational, and experimental studies of ayahuasca, and this compound appeared to be safe and well-tolerated; the most common adverse effects were transient emesis and nausea. In an RCT by Palhano-Fontes et al,²⁰ nausea was observed in 71% of participants in the ayahuasca group (vs 26% placebo), vomiting in 57% of participants (vs 0% placebo), and restlessness in 50% of participants (vs 20% placebo). The authors noted that for some participants the ayahuasca session “was not necessarily a pleasant experience,” and was accompanied by psychological distress.²⁰ Vomiting is traditionally viewed as an expected part of the purging process of ayahuasca religious ceremonies. Another review found that there appears to be good long-term tolerability of ayahuasca consumption among individuals who use this compound in religious ceremonies.²²

MDMA

Entactogens (or empathogens) are a class of psychoactive substances that produce experiences of emotional openness and connection. MDMA is an entactogen known to release serotonin, norepinephrine, and dopamine by inhibiting reuptake.²³ This process leads to the stimulation of neurohormonal signaling of oxytocin, cortisol, and other signaling molecules such as brain-derived neurotrophic factor.²⁴ Memory reconsolidation and fear extinction may also play a therapeutic role, enabled by reduced activity in the amygdala and insula, and increased connectivity between the amygdala and hippocampus.²⁴ MDMA has been reported to enhance feelings of well-being and increase prosocial behavior.²⁵ In the therapeutic setting, MDMA has been generally dosed at 75 to 125 mg in 2 to 3 sessions alongside 10 therapy sessions. Administration of MDMA gives the user a subjective experience of energy and distortions in time and perception.²⁶ These acute effects last approximately 2 to 4 hours.²⁷

Continue to: A meta-analysis...

A meta-analysis of 5 RCTs of MDMA-assisted therapy for PTSD in adults demonstrated that MDMA was well-tolerated, and few serious adverse events were reported.²⁸ Two trials from 2018 that were included in this meta-analysis—Mithoefer et al²⁹ and Ot’alora et al³⁰—illustrate the incidence of specific adverse effects. In a randomized, double-blind trial of 26 veterans and first responders with chronic PTSD, Mithoefer et al²⁹ found the most commonly reported reactions during experimental sessions with MDMA were anxiety (81%), headache (69%), fatigue (62%), muscle tension (62%), and jaw clenching or tight jaw (50%). The most commonly reported reactions during 7 days of contact were fatigue (88%), anxiety (73%), insomnia (69%), headache (46%), muscle tension (46%), and increased irritability (46%). One instance of suicidal ideation was severe enough to require psychiatric hospitalization (this was the only instance of suicidal ideation among the 106 patients in the meta-analysis by Bahji et al²⁸); the patient subsequently completed the trial. Transient elevation in pulse, blood pressure, and body temperature were noted during sessions that did not require medical intervention.²⁹ Ot’alora et al³⁰ found similar common adverse reactions: anxiety, dizziness, fatigue, headache, jaw clenching, muscle tension, and irritability. There were no serious adverse effects.

While the use of MDMA in controlled interventional settings has resulted in relatively few adverse events, robust literature describes the risks associated with the nonclinical/recreational use of MDMA. In cases of MDMA toxicity, death has been reported.³¹ Acutely, MDMA may lead to sympathomimetic effects, including serotonin syndrome.³¹ Longer-term studies of MDMA users have found chronic recreational use to be associated with worse sleep, poor mood, anxiety disturbances, memory deficits, and attention problems.³² MDMA has also been found to have moderate potential for abuse.³³

Ketamine/esketamine

Ketamine is a dissociative anesthetic with some hallucinogenic effects. It is an N-methyl-d-aspartate (NMDA) antagonist frequently used in anesthesia, and it can induce a state of sedation, immobility, pain relief, and amnesia. In low doses, ketamine is used off-label to treat major depressive disorder and treatment-resistant depression. Most clinical trials of ketamine for depression have dosed IV ketamine from 0.5 to 1 mg/kg 1 to 3 times a week. It can also be administered as an IM, intranasal, oral, subcutaneous, or sublingual formulation.³⁴

Esketamine, the S(+)-enantiomer of ketamine, is also an NDMA antagonist. It has been developed as an intranasal formulation, typically dosed between 56 and 84 mg 2 times a week for 1 month, once a week for the following month, and once every 1 to 2 weeks thereafter.³⁵ In most ketamine and esketamine trials, these compounds have been used without psychotherapy, although some interventions have integrated psychotherapy with ketamine treatment.³⁶

Bennett et al³⁷ elaborated on 3 paradigms for ketamine treatment: biochemical, psychotherapeutic, and psychedelic. The biochemical model examines the neuro­biological effects of the medication. The psychotherapeutic model views ketamine as a way of assisting the psychotherapy process. The psychedelic model utilizes ketamine’s dissociative and psychedelic properties to induce an altered state of consciousness for therapeutic purposes and psychospiritual exploration.

Continue to: A systematic review...

A systematic review of the common adverse effects associated with ketamine use in clinical trials for depression reported dissociation, sedation, perceptual disturbances, anxiety, agitation, euphoria, hypertension, tachycardia, headache, and dizziness.³⁸ Adverse effects experienced with esketamine in clinical trials include dissociation, dizziness, sedation, hypertension, hypoesthesia, gastrointestinal symptoms, and euphoric mood (Table 3³⁹). A recent systemic review found both ketamine and esketamine demonstrated higher adverse events than control conditions. IV ketamine also demonstrated lower dropouts and adverse events when compared to intranasal esketamine.⁴⁰

Nonclinical/recreational use of ketamine is notable for urinary toxicity; 20% to 30% of frequent users of ketamine experience urinary problems that can range from ketamine-induced cystitis to hydronephrosis and kidney failure.⁴¹ Liver toxicity has also been reported with chronic use of high-dose ketamine. Ketamine is liable to abuse, dependence, and tolerance. There is evidence that nonclinical use of ketamine may lead to morbidity; impairment of memory, cognition, and attention; and urinary, gastric, and hepatic pathology.⁴²

The FDA prescribing information for esketamine lists aneurysmal vascular disease, arteriovenous malformation, and intracerebral hemorrhage as contraindications.³⁹ Patients with cardiovascular and cerebrovascular conditions and risk factors may be at increased risk of adverse effects due to an increase in blood pressure. Esketamine can impair attention, judgment, thinking, reaction speed, and motor skills. Other adverse effects of esketamine noted in the prescribing information include dissociation, dizziness, nausea, sedation, vertigo, hypoesthesia, anxiety, lethargy, vomiting, feeling drunk, and euphoric mood.³⁹A study of postmarketing safety concerns with esketamine using reports submitted to the FDA Adverse Event Reporting System (FAERS) revealed signals for suicidal ideation (reporting odds ratio [ROR] 24.03; 95% CI, 18.72 to 30.84), and completed suicide (ROR 5.75; 95% CI, 3.18 to 10.41).⁴³ The signals for suicidal and self-injurious ideation remained significant when compared to venlafaxine in the FAERS database, while suicide attempts and fatal suicide attempts were no longer significant.⁴³ Concerns regarding acute ketamine withdrawal have also been described in case reports.⁴⁴

Other safety considerations of psychedelics

Hallucinogen persisting perception disorder

Hallucinogen persisting perception disorder (HPPD) is a rare condition associated with hallucinogen use. It is characterized by the recurrence of perceptual disturbances that an individual experienced while using hallucinogenic substances that creates significant distress or impairment.⁴⁵ Because HPPD is a rare disorder, the exact prevalence is not well characterized, but DSM-5 suggests it is approximately 4.2%.⁴⁶ HPPD is associated with numerous psychoactive substances, including psilocybin, ayahuasca, MDMA, and ketamine, but is most associated with LSD.⁴⁵ HPPD is more likely to arise in individuals with histories of psychiatric illness or substance use disorders.⁴⁷

Serotonin toxicity and other serotonergic interactions

Serotonin toxicity is a risk of serotonergic psychedelics, particularly when such agents are used in combination with serotonergic psychotropic medications. The most severe manifestation of serotonin toxicity is serotonin syndrome, which manifests as a life-threatening condition characterized by myoclonus, rigidity, agitation, delirium, and unstable cardiovascular functioning. Many psychedelic compounds have transient serotonin-related adverse effects, but serotonin toxicity due to psychedelic use is rare.⁴⁸ Due to their mechanism of action, classical psychedelics are relatively safe in combination with monoamine oxidase inhibitors (MAOIs) and selective serotonin reuptake inhibitors. MDMA is a serotonin-releasing agent that has a higher risk of serotonin syndrome or hypertensive crisis when used in combination with MAOIs.⁴⁸

Boundary violations in psychedelic-assisted psychotherapy

A key task facing psychedelic research is to establish parameters for the safe and ethical use of these agents. This is particularly relevant given the hype that surrounds the psychedelic resurgence and what we know about the controversial history of these substances. Anderson et al⁴⁹ argued that “psychedelics can have lingering effects that include increased suggestibility and affective instability, as well as altered ego structure, social behaviour, and philosophical worldview. Stated simply, psychedelics can induce a vulnerable state both during and after treatment sessions.”

Continue to: Psychedelic treatment...

Psychedelic treatments such as psilocybin and MDMA are typically offered within the context of psychedelic-assisted psychotherapy, and some researchers have raised concerns regarding boundary violations,⁵⁰ given the patients’ particularly vulnerable states. In addition to concerns about sexual harassment, the financial exploitation of older adults is also a possible risk.⁵¹

Caveats to consider

Novel psychedelics therapies have demonstrated promising preliminary results for a broad range of psychiatric indications, including depression, end-of-life distress, substance use disorders, PTSD, and improving well-being. To date, psychedelics are generally well-tolerated in adults in clinical trials.

However, when it comes to adverse effects, there are challenges in regards to interpreting the psychedelic state.⁵² Some consider any unpleasant or unsettling psychedelic experience as an adverse reaction, while others consider it part of the therapeutic process. This is exemplified by the case of vomiting during ayahuasca ceremonies, which is generally considered part of the ritual. In such instances, it is essential to obtain informed consent and ensure participants are aware of these aspects of the experience. Compared to substances such as alcohol, opioids, and cocaine, psychedelics are remarkably safe from a physiological perspective, especially with regards to the risks of toxicity, mortality, and dependence.⁵³ Their psychological safety is less established, and more caution and research is needed. The high incidence of adverse effects and suicidality noted in the recent phase 2 trial of psilocybin in treatment resistant depression are a reminder of this.¹³

There is uncertainty regarding the magnitude of risk in real-world clinical practice, particularly regarding addiction, suicidality, and precipitation or worsening of psychotic disorders. For example, note the extensive exclusion criteria used in the psilocybin vs escitalopram RCT by Carhart-Harris et al¹²: currently or previously diagnosed psychotic disorder, immediate family member with a diagnosed psychotic disorder, significant medical comorbidity (eg, diabetes, epilepsy, severe cardiovascular disease, hepatic or renal failure), history of suicide attempts requiring hospitalization, history of mania, pregnancy, and abnormal QT interval prolongation, among others. It would be prudent to keep these contraindications in mind regarding the clinical use of psychedelics in the future. This is particularly important in older adults because such patients often have substantial medical comorbidities and are at greater risk for adverse effects. For ketamine, research has implicated the role of mu opioid agonism in mediating ketamine’s antidepressant effects.⁵⁴ This raises concerns about abuse, dependence, and addiction, especially with long-term use. There are also concerns regarding protracted withdrawal symptoms and associated suicidality.⁵⁵

The therapeutic use of psychedelics is an exciting and promising avenue, with ongoing research and a rapidly evolving literature. An attitude of cautious optimism is warranted, but efficacy and safety should be demonstrated in well-designed and rigorous trials with adequate long-term follow-up before routine clinical use is recommended.

Bottom Line

In clinical trials for psychiatric disorders, psychedelics have been associated with a range of cognitive, psychiatric, and psychoactive adverse effects but generally have been well-tolerated, with a low incidence of serious adverse effects.

Related Resources

• American Psychiatric Association. Position Statement on the Use of Psychedelic and Empathogenic Agents for Mental Health Conditions. Updated July 2022. Accessed October 24, 2022. https://www.psychiatry.org/getattachment/d5c13619-ca1f-491f-a7a8-b7141c800904/Position-Use-of-Psychedelic-Empathogenic-Agents.pdf
• Johns Hopkins Center for Psychedelic & Consciousness Research. https://hopkinspsychedelic.org/
• Multidisciplinary Association for Psychedelic Studies (MAPS). https://maps.org/

Drug Brand Names

Esketamine • Spravato
Ketamine • Ketalar
Venlafaxine • Effexor