Dermatology

Seeing patients with vulvar problems via telemedicine can lead to efficient and successful care, but there are challenges and limitations with this approach, doctors are finding.

Image quality is one key factor that determines whether a clinician can assess and manage a condition remotely, said Aruna Venkatesan, MD, chief of dermatology and director of the genital dermatology clinic at Santa Clara Valley Medical Center in San Jose, Calif. Other issues may be especially relevant to televulvology, including privacy concerns.

“Who is helping with the positioning? Who is the photographer? Is the patient comfortable with having photos taken of this part of their body and submitted, even if they know it is submitted securely? Because they might not be,” Dr. Venkatesan said in a lecture at a virtual conference on diseases of the vulva and vagina, hosted by the International Society for the Study of Vulvovaginal Disease.

When quality photographs from referring providers are available, Dr. Venkatesan has conducted virtual new consultations. “But sometimes I will do a virtual telemedicine visit as the first visit and then figure out, okay, this isn’t really sufficient. I need to see them in person.”

Melissa Mauskar, MD, assistant professor of dermatology and obstetrics and gynecology at the University of Texas Southwestern Medical Center, Dallas, described a case early on during the COVID-19 pandemic that illustrates a limitation of virtual visits.

A patient sent in a photograph that appeared to show lichen sclerosus. “There looked like some classic lichen sclerosus changes,” Dr. Mauskar said during a discussion at the meeting. “But she was having a lot of pain, and after a week, her pain still was not better.”

Dr. Mauskar brought the patient into the office and ultimately diagnosed a squamous cell carcinoma. “What I thought was a normal erosion was actually an ulcerated plaque,” she said.

Like Dr. Venkatesan, Dr. Mauskar has found that image quality can be uneven. Photographs may be out of focus. Video visits have been a mixed bag. Some are successful. Other times, Dr. Mauskar has to tell the patient she needs to see her in the office.

Certain clinical scenarios require a vaginal exam, Dr. Venkatesan noted. Although some type of assessment may be possible if a patient is with a primary care provider during the telemedicine visit, the examination may not be equivalent. Doctors also should anticipate where a patient might go to have a biopsy if one is necessary.

Another telemedicine caveat pertains to patient counseling. When using store-and-forward telemedicine systems, advising patients in a written report can be challenging. “Is there an easy way ... to counsel patients how to apply their topical medications?” Dr. Venkatesan said.
 

Excellent care is possible

Vulvology is a small part of Dr. Venkatesan’s general dermatology practice, which has used telemedicine extensively since the pandemic.

In recent years, Dr. Venkatesan’s clinic began encouraging providers in their health system to submit photographs with referrals. “That has really paid off now because we have been able to help provide a lot of excellent quality care for patients without them having to come in,” she said. “We may be able to say: ‘These are excellent photos. We know what this patient has. We can manage it. They don’t need to come see us in person.’ ” That could be the case for certain types of acne, eczema, and psoriasis.

In other cases, they may be able to provide initial advice remotely but still want to see the patient. For a patient with severe acne, “I may be able to tell the referring doctor: ‘Please start the patient on these three medicines. It will take 2 months for those medicines to start working and then we will plan to have an in-person dermatology visit.’ ” In this case, telemedicine essentially replaces one in-person visit.

If photographs are poor, the differential diagnosis is broad, a procedure is required, the doctor needs to touch the lesion, or more involved history taking or counseling are required, the patient may need to go into the office.

Beyond its public health advantages during a pandemic, telemedicine can improve access for patients who live far away, lack transportation, or are unable to take time off from work. It also can decrease patient wait times. “Once we started doing some telemedicine work … we went from having a 5-month wait time for patients to see us in person to a 72-hour wait time for providing some care for patients if they had good photos as part of their referral,” Dr. Venkatesan said.

Telemedicine has been used in inpatient and outpatient dermatology settings. Primary care providers who consult with dermatologists using a store-and-forward telemedicine system may improve their dermatology knowledge and feel more confident in their ability to diagnose and manage dermatologic conditions, research indicates.

In obstetrics and gynecology, telemedicine may play a role in preconception, contraception, and medical abortion care, prenatal visits, well-woman exams, mental health, and pre- and postoperative counseling, a recent review suggests.
 

Image quality is key

“Quality of the image is so critical for being able to provide good care, especially in such a visual exam field as dermatology,” Dr. Venkatesan said.

To that end, doctors have offered recommendations on how to photograph skin conditions. A guide shared by the mobile telehealth system company ClickMedix suggests focusing on the area of importance, capturing the extent of involvement, and including involved and uninvolved areas.

Good lighting and checking the image resolution can help, Dr. Venkatesan offered. Nevertheless, patients may have difficulty photographing themselves. If a patient is with their primary care doctor, “we are much more likely to be able to get good quality photos,” she said.

Dr. Venkatesan is a paid consultant for DirectDerm, a store-and-forward teledermatology company. Dr. Mauskar had no relevant disclosures.

[email protected]

Seeing patients with vulvar problems via telemedicine can lead to efficient and successful care, but there are challenges and limitations with this approach, doctors are finding.

Image quality is one key factor that determines whether a clinician can assess and manage a condition remotely, said Aruna Venkatesan, MD, chief of dermatology and director of the genital dermatology clinic at Santa Clara Valley Medical Center in San Jose, Calif. Other issues may be especially relevant to televulvology, including privacy concerns.

“Who is helping with the positioning? Who is the photographer? Is the patient comfortable with having photos taken of this part of their body and submitted, even if they know it is submitted securely? Because they might not be,” Dr. Venkatesan said in a lecture at a virtual conference on diseases of the vulva and vagina, hosted by the International Society for the Study of Vulvovaginal Disease.

When quality photographs from referring providers are available, Dr. Venkatesan has conducted virtual new consultations. “But sometimes I will do a virtual telemedicine visit as the first visit and then figure out, okay, this isn’t really sufficient. I need to see them in person.”

Melissa Mauskar, MD, assistant professor of dermatology and obstetrics and gynecology at the University of Texas Southwestern Medical Center, Dallas, described a case early on during the COVID-19 pandemic that illustrates a limitation of virtual visits.

A patient sent in a photograph that appeared to show lichen sclerosus. “There looked like some classic lichen sclerosus changes,” Dr. Mauskar said during a discussion at the meeting. “But she was having a lot of pain, and after a week, her pain still was not better.”

Dr. Mauskar brought the patient into the office and ultimately diagnosed a squamous cell carcinoma. “What I thought was a normal erosion was actually an ulcerated plaque,” she said.

Like Dr. Venkatesan, Dr. Mauskar has found that image quality can be uneven. Photographs may be out of focus. Video visits have been a mixed bag. Some are successful. Other times, Dr. Mauskar has to tell the patient she needs to see her in the office.

Certain clinical scenarios require a vaginal exam, Dr. Venkatesan noted. Although some type of assessment may be possible if a patient is with a primary care provider during the telemedicine visit, the examination may not be equivalent. Doctors also should anticipate where a patient might go to have a biopsy if one is necessary.

Another telemedicine caveat pertains to patient counseling. When using store-and-forward telemedicine systems, advising patients in a written report can be challenging. “Is there an easy way ... to counsel patients how to apply their topical medications?” Dr. Venkatesan said.
 

Excellent care is possible

Vulvology is a small part of Dr. Venkatesan’s general dermatology practice, which has used telemedicine extensively since the pandemic.

In recent years, Dr. Venkatesan’s clinic began encouraging providers in their health system to submit photographs with referrals. “That has really paid off now because we have been able to help provide a lot of excellent quality care for patients without them having to come in,” she said. “We may be able to say: ‘These are excellent photos. We know what this patient has. We can manage it. They don’t need to come see us in person.’ ” That could be the case for certain types of acne, eczema, and psoriasis.

In other cases, they may be able to provide initial advice remotely but still want to see the patient. For a patient with severe acne, “I may be able to tell the referring doctor: ‘Please start the patient on these three medicines. It will take 2 months for those medicines to start working and then we will plan to have an in-person dermatology visit.’ ” In this case, telemedicine essentially replaces one in-person visit.

If photographs are poor, the differential diagnosis is broad, a procedure is required, the doctor needs to touch the lesion, or more involved history taking or counseling are required, the patient may need to go into the office.

Beyond its public health advantages during a pandemic, telemedicine can improve access for patients who live far away, lack transportation, or are unable to take time off from work. It also can decrease patient wait times. “Once we started doing some telemedicine work … we went from having a 5-month wait time for patients to see us in person to a 72-hour wait time for providing some care for patients if they had good photos as part of their referral,” Dr. Venkatesan said.

Telemedicine has been used in inpatient and outpatient dermatology settings. Primary care providers who consult with dermatologists using a store-and-forward telemedicine system may improve their dermatology knowledge and feel more confident in their ability to diagnose and manage dermatologic conditions, research indicates.

In obstetrics and gynecology, telemedicine may play a role in preconception, contraception, and medical abortion care, prenatal visits, well-woman exams, mental health, and pre- and postoperative counseling, a recent review suggests.
 

Image quality is key

“Quality of the image is so critical for being able to provide good care, especially in such a visual exam field as dermatology,” Dr. Venkatesan said.

To that end, doctors have offered recommendations on how to photograph skin conditions. A guide shared by the mobile telehealth system company ClickMedix suggests focusing on the area of importance, capturing the extent of involvement, and including involved and uninvolved areas.

Good lighting and checking the image resolution can help, Dr. Venkatesan offered. Nevertheless, patients may have difficulty photographing themselves. If a patient is with their primary care doctor, “we are much more likely to be able to get good quality photos,” she said.

Dr. Venkatesan is a paid consultant for DirectDerm, a store-and-forward teledermatology company. Dr. Mauskar had no relevant disclosures.

[email protected]

Seeing patients with vulvar problems via telemedicine can lead to efficient and successful care, but there are challenges and limitations with this approach, doctors are finding.

Image quality is one key factor that determines whether a clinician can assess and manage a condition remotely, said Aruna Venkatesan, MD, chief of dermatology and director of the genital dermatology clinic at Santa Clara Valley Medical Center in San Jose, Calif. Other issues may be especially relevant to televulvology, including privacy concerns.

“Who is helping with the positioning? Who is the photographer? Is the patient comfortable with having photos taken of this part of their body and submitted, even if they know it is submitted securely? Because they might not be,” Dr. Venkatesan said in a lecture at a virtual conference on diseases of the vulva and vagina, hosted by the International Society for the Study of Vulvovaginal Disease.

When quality photographs from referring providers are available, Dr. Venkatesan has conducted virtual new consultations. “But sometimes I will do a virtual telemedicine visit as the first visit and then figure out, okay, this isn’t really sufficient. I need to see them in person.”

Melissa Mauskar, MD, assistant professor of dermatology and obstetrics and gynecology at the University of Texas Southwestern Medical Center, Dallas, described a case early on during the COVID-19 pandemic that illustrates a limitation of virtual visits.

A patient sent in a photograph that appeared to show lichen sclerosus. “There looked like some classic lichen sclerosus changes,” Dr. Mauskar said during a discussion at the meeting. “But she was having a lot of pain, and after a week, her pain still was not better.”

Dr. Mauskar brought the patient into the office and ultimately diagnosed a squamous cell carcinoma. “What I thought was a normal erosion was actually an ulcerated plaque,” she said.

Like Dr. Venkatesan, Dr. Mauskar has found that image quality can be uneven. Photographs may be out of focus. Video visits have been a mixed bag. Some are successful. Other times, Dr. Mauskar has to tell the patient she needs to see her in the office.

Certain clinical scenarios require a vaginal exam, Dr. Venkatesan noted. Although some type of assessment may be possible if a patient is with a primary care provider during the telemedicine visit, the examination may not be equivalent. Doctors also should anticipate where a patient might go to have a biopsy if one is necessary.

Another telemedicine caveat pertains to patient counseling. When using store-and-forward telemedicine systems, advising patients in a written report can be challenging. “Is there an easy way ... to counsel patients how to apply their topical medications?” Dr. Venkatesan said.
 

Excellent care is possible

Vulvology is a small part of Dr. Venkatesan’s general dermatology practice, which has used telemedicine extensively since the pandemic.

In recent years, Dr. Venkatesan’s clinic began encouraging providers in their health system to submit photographs with referrals. “That has really paid off now because we have been able to help provide a lot of excellent quality care for patients without them having to come in,” she said. “We may be able to say: ‘These are excellent photos. We know what this patient has. We can manage it. They don’t need to come see us in person.’ ” That could be the case for certain types of acne, eczema, and psoriasis.

In other cases, they may be able to provide initial advice remotely but still want to see the patient. For a patient with severe acne, “I may be able to tell the referring doctor: ‘Please start the patient on these three medicines. It will take 2 months for those medicines to start working and then we will plan to have an in-person dermatology visit.’ ” In this case, telemedicine essentially replaces one in-person visit.

If photographs are poor, the differential diagnosis is broad, a procedure is required, the doctor needs to touch the lesion, or more involved history taking or counseling are required, the patient may need to go into the office.

Beyond its public health advantages during a pandemic, telemedicine can improve access for patients who live far away, lack transportation, or are unable to take time off from work. It also can decrease patient wait times. “Once we started doing some telemedicine work … we went from having a 5-month wait time for patients to see us in person to a 72-hour wait time for providing some care for patients if they had good photos as part of their referral,” Dr. Venkatesan said.

Telemedicine has been used in inpatient and outpatient dermatology settings. Primary care providers who consult with dermatologists using a store-and-forward telemedicine system may improve their dermatology knowledge and feel more confident in their ability to diagnose and manage dermatologic conditions, research indicates.

In obstetrics and gynecology, telemedicine may play a role in preconception, contraception, and medical abortion care, prenatal visits, well-woman exams, mental health, and pre- and postoperative counseling, a recent review suggests.
 

Image quality is key

“Quality of the image is so critical for being able to provide good care, especially in such a visual exam field as dermatology,” Dr. Venkatesan said.

To that end, doctors have offered recommendations on how to photograph skin conditions. A guide shared by the mobile telehealth system company ClickMedix suggests focusing on the area of importance, capturing the extent of involvement, and including involved and uninvolved areas.

Good lighting and checking the image resolution can help, Dr. Venkatesan offered. Nevertheless, patients may have difficulty photographing themselves. If a patient is with their primary care doctor, “we are much more likely to be able to get good quality photos,” she said.

Dr. Venkatesan is a paid consultant for DirectDerm, a store-and-forward teledermatology company. Dr. Mauskar had no relevant disclosures.

[email protected]

Given the longstanding scarring alopecia, with negative fungal cultures and with perifollicular erythema and scaling, this diagnosis is most consistent with lichen planopilaris.

Lichen planopilaris (LPP) is considered one of the primary scarring alopecias, a group of diseases characterized by inflammation and subsequent irreversible hair loss.¹ LPP specifically is believed to be caused by dysfunction of cell-mediated immunity, resulting in T lymphocytes attacking follicular hair stem cells.² It typically presents with hair loss, pruritus, scaling, burning pain, and tenderness of the scalp when active,^1,3 with exam showing perifollicular scale and erythema on the borders of the patches of alopecia.^4,5 Over time, scarring of the scalp develops with loss of follicular ostia.¹ Definitive diagnosis typically requires punch biopsy of the affected scalp, as such can determine the presence or absence of inflammation in affected areas of the scalp.¹

What’s the treatment plan?

Given that LPP is an autoimmune inflammatory disease process, the goal of treatment is to calm down the inflammation of the scalp to prevent further progression of a patient’s hair loss. This is typically achieved with superpotent topical corticosteroids, such as clobetasol applied directly to the scalp, and/or intralesional corticosteroids, such as triamcinolone acetonide suspension injected directly to the affected scalp.^3,6,7 Other treatment options include systemic agents, such as hydroxychloroquine, methotrexate, mycophenolate mofetil, pioglitazone, and doxycycline.^3,6 Hair loss is not reversible as loss of follicular ostia and hair stem cells results in permanent scarring.¹ Management often requires a referral to dermatology for aggressive treatment to prevent further hair loss.

What’s the differential diagnosis?

The differential diagnosis of lichen planopilaris includes other scarring alopecias, including central centrifugal cicatricial alopecia, discoid lupus erythematosus, folliculitis decalvans. While nonscarring, alopecia areata, trichotillomania, and telogen effluvium are discussed below as well.

Central centrifugal cicatricial alopecia is very rare in pediatrics, and is a type of asymptomatic scarring alopecia that begins at the vertex of the scalp, spreading centrifugally and resulting in shiny plaque development. Treatment involves reduction of hair grooming as well as topical and intralesional steroids.

Discoid lupus erythematosus presents as scaling erythematous plaques on the face and scalp that result in skin pigment changes and atrophy over time. Scalp involvement results in scarring alopecia. Treatment includes the use of high-potency topical corticosteroids, topical calcineurin inhibitors, and hydroxychloroquine.

Folliculitis decalvans is another form of scarring alopecia believed to be caused by an inflammatory response to Staphylococcus aureus in the scalp, resulting in the formation of scarring of the scalp and perifollicular pustules. Treatment is topical antibiotics and intralesional steroids.

Alopecia areata is a form of nonscarring alopecia resulting in small round patches of partially reversible hair loss characterized by the pathognomonic finding of so-called exclamation point hairs that are broader distally and taper toward the scalp on physical exam. Considered an autoimmune disorder, it varies greatly in extent and course. While focal hair loss is the hallmark of this disease, usually hair follicles are present.

Trichotillosis, also known as trichotillomania (hair pulling), results in alopecia with irregular borders and broken hairs of different lengths secondary to the urge to remove or pull one’s own hair, resulting in nonscarring alopecia. It may be associated with stress or anxiety, obsessive-compulsive disorders, or other repetitive body-altering behaviors. Treatments include reassurance and education as it can be self-limited in some, behavior modification, or systemic therapy including tricyclic antidepressants or SSRIs.

Our patient underwent scalp punch biopsy to confirm the diagnosis and was started on potent topical corticosteroids with good disease control.

Dr. Haft is a pediatric dermatology research associate in the division of pediatric and adolescent dermatology, University of California, San Diego, and Rady Children’s Hospital, San Diego. Dr. Eichenfield is the vice chair of the department of dermatology and a professor of dermatology and pediatrics at the university, and he is chief of pediatric and adolescent dermatology at the hospital. Neither of the doctors had any relevant financial disclosures. Email them at [email protected].
 

References

1. J Am Acad Dermatol. 2005 Jul. doi: 10.1016/j.jaad.2004.06.015.

2. J Pathol. 2013 Oct. doi: 10.1002/path.4233.

3. Pediatr Dermatol. 2015 Sep-Oct. doi: 10.1111/pde.12624.

4. J Am Acad Dermatol. 2004 Jan. doi: 10.1016/j.jaad.2003.04.001.

5. J Am Acad Dermatol. 1992 Dec. doi: 10.1016/0190-9622(92)70290-v.

6. Clin Cosmet Investig Dermatol. 2018 Feb 27. doi: 10.2147/CCID.S137870.

7. Semin Cutan Med Surg. 2009 Mar. doi: 10.1016/j.sder.2008.12.006.

Given the longstanding scarring alopecia, with negative fungal cultures and with perifollicular erythema and scaling, this diagnosis is most consistent with lichen planopilaris.

Lichen planopilaris (LPP) is considered one of the primary scarring alopecias, a group of diseases characterized by inflammation and subsequent irreversible hair loss.¹ LPP specifically is believed to be caused by dysfunction of cell-mediated immunity, resulting in T lymphocytes attacking follicular hair stem cells.² It typically presents with hair loss, pruritus, scaling, burning pain, and tenderness of the scalp when active,^1,3 with exam showing perifollicular scale and erythema on the borders of the patches of alopecia.^4,5 Over time, scarring of the scalp develops with loss of follicular ostia.¹ Definitive diagnosis typically requires punch biopsy of the affected scalp, as such can determine the presence or absence of inflammation in affected areas of the scalp.¹

What’s the treatment plan?

Given that LPP is an autoimmune inflammatory disease process, the goal of treatment is to calm down the inflammation of the scalp to prevent further progression of a patient’s hair loss. This is typically achieved with superpotent topical corticosteroids, such as clobetasol applied directly to the scalp, and/or intralesional corticosteroids, such as triamcinolone acetonide suspension injected directly to the affected scalp.^3,6,7 Other treatment options include systemic agents, such as hydroxychloroquine, methotrexate, mycophenolate mofetil, pioglitazone, and doxycycline.^3,6 Hair loss is not reversible as loss of follicular ostia and hair stem cells results in permanent scarring.¹ Management often requires a referral to dermatology for aggressive treatment to prevent further hair loss.

What’s the differential diagnosis?

The differential diagnosis of lichen planopilaris includes other scarring alopecias, including central centrifugal cicatricial alopecia, discoid lupus erythematosus, folliculitis decalvans. While nonscarring, alopecia areata, trichotillomania, and telogen effluvium are discussed below as well.

Central centrifugal cicatricial alopecia is very rare in pediatrics, and is a type of asymptomatic scarring alopecia that begins at the vertex of the scalp, spreading centrifugally and resulting in shiny plaque development. Treatment involves reduction of hair grooming as well as topical and intralesional steroids.

Discoid lupus erythematosus presents as scaling erythematous plaques on the face and scalp that result in skin pigment changes and atrophy over time. Scalp involvement results in scarring alopecia. Treatment includes the use of high-potency topical corticosteroids, topical calcineurin inhibitors, and hydroxychloroquine.

Folliculitis decalvans is another form of scarring alopecia believed to be caused by an inflammatory response to Staphylococcus aureus in the scalp, resulting in the formation of scarring of the scalp and perifollicular pustules. Treatment is topical antibiotics and intralesional steroids.

Alopecia areata is a form of nonscarring alopecia resulting in small round patches of partially reversible hair loss characterized by the pathognomonic finding of so-called exclamation point hairs that are broader distally and taper toward the scalp on physical exam. Considered an autoimmune disorder, it varies greatly in extent and course. While focal hair loss is the hallmark of this disease, usually hair follicles are present.

Trichotillosis, also known as trichotillomania (hair pulling), results in alopecia with irregular borders and broken hairs of different lengths secondary to the urge to remove or pull one’s own hair, resulting in nonscarring alopecia. It may be associated with stress or anxiety, obsessive-compulsive disorders, or other repetitive body-altering behaviors. Treatments include reassurance and education as it can be self-limited in some, behavior modification, or systemic therapy including tricyclic antidepressants or SSRIs.

Our patient underwent scalp punch biopsy to confirm the diagnosis and was started on potent topical corticosteroids with good disease control.

Dr. Haft is a pediatric dermatology research associate in the division of pediatric and adolescent dermatology, University of California, San Diego, and Rady Children’s Hospital, San Diego. Dr. Eichenfield is the vice chair of the department of dermatology and a professor of dermatology and pediatrics at the university, and he is chief of pediatric and adolescent dermatology at the hospital. Neither of the doctors had any relevant financial disclosures. Email them at [email protected].
 

References

1. J Am Acad Dermatol. 2005 Jul. doi: 10.1016/j.jaad.2004.06.015.

2. J Pathol. 2013 Oct. doi: 10.1002/path.4233.

3. Pediatr Dermatol. 2015 Sep-Oct. doi: 10.1111/pde.12624.

4. J Am Acad Dermatol. 2004 Jan. doi: 10.1016/j.jaad.2003.04.001.

5. J Am Acad Dermatol. 1992 Dec. doi: 10.1016/0190-9622(92)70290-v.

6. Clin Cosmet Investig Dermatol. 2018 Feb 27. doi: 10.2147/CCID.S137870.

7. Semin Cutan Med Surg. 2009 Mar. doi: 10.1016/j.sder.2008.12.006.

Given the longstanding scarring alopecia, with negative fungal cultures and with perifollicular erythema and scaling, this diagnosis is most consistent with lichen planopilaris.

Lichen planopilaris (LPP) is considered one of the primary scarring alopecias, a group of diseases characterized by inflammation and subsequent irreversible hair loss.¹ LPP specifically is believed to be caused by dysfunction of cell-mediated immunity, resulting in T lymphocytes attacking follicular hair stem cells.² It typically presents with hair loss, pruritus, scaling, burning pain, and tenderness of the scalp when active,^1,3 with exam showing perifollicular scale and erythema on the borders of the patches of alopecia.^4,5 Over time, scarring of the scalp develops with loss of follicular ostia.¹ Definitive diagnosis typically requires punch biopsy of the affected scalp, as such can determine the presence or absence of inflammation in affected areas of the scalp.¹

What’s the treatment plan?

Given that LPP is an autoimmune inflammatory disease process, the goal of treatment is to calm down the inflammation of the scalp to prevent further progression of a patient’s hair loss. This is typically achieved with superpotent topical corticosteroids, such as clobetasol applied directly to the scalp, and/or intralesional corticosteroids, such as triamcinolone acetonide suspension injected directly to the affected scalp.^3,6,7 Other treatment options include systemic agents, such as hydroxychloroquine, methotrexate, mycophenolate mofetil, pioglitazone, and doxycycline.^3,6 Hair loss is not reversible as loss of follicular ostia and hair stem cells results in permanent scarring.¹ Management often requires a referral to dermatology for aggressive treatment to prevent further hair loss.

What’s the differential diagnosis?

The differential diagnosis of lichen planopilaris includes other scarring alopecias, including central centrifugal cicatricial alopecia, discoid lupus erythematosus, folliculitis decalvans. While nonscarring, alopecia areata, trichotillomania, and telogen effluvium are discussed below as well.

Central centrifugal cicatricial alopecia is very rare in pediatrics, and is a type of asymptomatic scarring alopecia that begins at the vertex of the scalp, spreading centrifugally and resulting in shiny plaque development. Treatment involves reduction of hair grooming as well as topical and intralesional steroids.

Discoid lupus erythematosus presents as scaling erythematous plaques on the face and scalp that result in skin pigment changes and atrophy over time. Scalp involvement results in scarring alopecia. Treatment includes the use of high-potency topical corticosteroids, topical calcineurin inhibitors, and hydroxychloroquine.

Folliculitis decalvans is another form of scarring alopecia believed to be caused by an inflammatory response to Staphylococcus aureus in the scalp, resulting in the formation of scarring of the scalp and perifollicular pustules. Treatment is topical antibiotics and intralesional steroids.

Alopecia areata is a form of nonscarring alopecia resulting in small round patches of partially reversible hair loss characterized by the pathognomonic finding of so-called exclamation point hairs that are broader distally and taper toward the scalp on physical exam. Considered an autoimmune disorder, it varies greatly in extent and course. While focal hair loss is the hallmark of this disease, usually hair follicles are present.

Trichotillosis, also known as trichotillomania (hair pulling), results in alopecia with irregular borders and broken hairs of different lengths secondary to the urge to remove or pull one’s own hair, resulting in nonscarring alopecia. It may be associated with stress or anxiety, obsessive-compulsive disorders, or other repetitive body-altering behaviors. Treatments include reassurance and education as it can be self-limited in some, behavior modification, or systemic therapy including tricyclic antidepressants or SSRIs.

Our patient underwent scalp punch biopsy to confirm the diagnosis and was started on potent topical corticosteroids with good disease control.

Dr. Haft is a pediatric dermatology research associate in the division of pediatric and adolescent dermatology, University of California, San Diego, and Rady Children’s Hospital, San Diego. Dr. Eichenfield is the vice chair of the department of dermatology and a professor of dermatology and pediatrics at the university, and he is chief of pediatric and adolescent dermatology at the hospital. Neither of the doctors had any relevant financial disclosures. Email them at [email protected].
 

References

1. J Am Acad Dermatol. 2005 Jul. doi: 10.1016/j.jaad.2004.06.015.

2. J Pathol. 2013 Oct. doi: 10.1002/path.4233.

3. Pediatr Dermatol. 2015 Sep-Oct. doi: 10.1111/pde.12624.

4. J Am Acad Dermatol. 2004 Jan. doi: 10.1016/j.jaad.2003.04.001.

5. J Am Acad Dermatol. 1992 Dec. doi: 10.1016/0190-9622(92)70290-v.

6. Clin Cosmet Investig Dermatol. 2018 Feb 27. doi: 10.2147/CCID.S137870.

7. Semin Cutan Med Surg. 2009 Mar. doi: 10.1016/j.sder.2008.12.006.

An excisional biopsy revealed that this was an eccrine poroma, a benign neoplasm of sweat gland tissue in the epidermis.

This lesion was clearly not a wart, as it lacked the common verrucous and keratotic features one would expect, and it did not respond to wart treatments. Other diagnoses that might be considered with a lesion like this include pyogenic granuloma, periungual fibroma, and squamous cell carcinoma.

Poromas are well demarcated papules that grow slowly or are stable in size. They are most commonly flesh colored and smooth, but poromas may also appear verrucous, pigmented, or ulcerated. They are usually found on acral skin—particularly the palms or soles. Due to their location, poromas bleed easily, which is what usually prompts patients to seek care. Friable lesions can mimic acral melanoma.

Poromas occur most often in patients over 40 years of age and are evenly distributed among sexes and skin types. Cases have been associated with trauma, radiation, and chemotherapy. Although exceedingly rare, malignant transformation can occur in the form of eccrine porocarcinoma—a larger tumor that can grow rapidly and that has metastatic potential.

Treatment is optional—but desirable—when lesions are painful or bleed easily. Surgical excision is curative. Shave biopsy or curettage coupled with electrocautery of the base is also curative. Recurrence rates are very low with either method of treatment.

In this case, an excisional biopsy of the lateral nail fold was both diagnostic and curative (second image). The patient remained clear 9 months after treatment.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

An excisional biopsy revealed that this was an eccrine poroma, a benign neoplasm of sweat gland tissue in the epidermis.

This lesion was clearly not a wart, as it lacked the common verrucous and keratotic features one would expect, and it did not respond to wart treatments. Other diagnoses that might be considered with a lesion like this include pyogenic granuloma, periungual fibroma, and squamous cell carcinoma.

Poromas are well demarcated papules that grow slowly or are stable in size. They are most commonly flesh colored and smooth, but poromas may also appear verrucous, pigmented, or ulcerated. They are usually found on acral skin—particularly the palms or soles. Due to their location, poromas bleed easily, which is what usually prompts patients to seek care. Friable lesions can mimic acral melanoma.

Poromas occur most often in patients over 40 years of age and are evenly distributed among sexes and skin types. Cases have been associated with trauma, radiation, and chemotherapy. Although exceedingly rare, malignant transformation can occur in the form of eccrine porocarcinoma—a larger tumor that can grow rapidly and that has metastatic potential.

Treatment is optional—but desirable—when lesions are painful or bleed easily. Surgical excision is curative. Shave biopsy or curettage coupled with electrocautery of the base is also curative. Recurrence rates are very low with either method of treatment.

In this case, an excisional biopsy of the lateral nail fold was both diagnostic and curative (second image). The patient remained clear 9 months after treatment.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

An excisional biopsy revealed that this was an eccrine poroma, a benign neoplasm of sweat gland tissue in the epidermis.

This lesion was clearly not a wart, as it lacked the common verrucous and keratotic features one would expect, and it did not respond to wart treatments. Other diagnoses that might be considered with a lesion like this include pyogenic granuloma, periungual fibroma, and squamous cell carcinoma.

Poromas are well demarcated papules that grow slowly or are stable in size. They are most commonly flesh colored and smooth, but poromas may also appear verrucous, pigmented, or ulcerated. They are usually found on acral skin—particularly the palms or soles. Due to their location, poromas bleed easily, which is what usually prompts patients to seek care. Friable lesions can mimic acral melanoma.

Poromas occur most often in patients over 40 years of age and are evenly distributed among sexes and skin types. Cases have been associated with trauma, radiation, and chemotherapy. Although exceedingly rare, malignant transformation can occur in the form of eccrine porocarcinoma—a larger tumor that can grow rapidly and that has metastatic potential.

Treatment is optional—but desirable—when lesions are painful or bleed easily. Surgical excision is curative. Shave biopsy or curettage coupled with electrocautery of the base is also curative. Recurrence rates are very low with either method of treatment.

In this case, an excisional biopsy of the lateral nail fold was both diagnostic and curative (second image). The patient remained clear 9 months after treatment.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

The miniscule papules arising suddenly on the trunk and genitals with linear arrays and clusters are clinically consistent with lichen nitidus, an uncommon eruption without a clear etiology.

Presentations may be focal or widespread and range from mildly itchy to asymptomatic. Children and young adults are most often affected. Linear arrays may appear in response to the trauma of scratching, which is termed the Koebner phenomenon. The differential diagnosis includes molluscum contagiosum, lichen planus, and lichen spinulosis. Usually these conditions can be distinguished clinically, but a biopsy would differentiate them, if needed. It’s worth noting, too, that lichen nitidus papules are monomorphic and lack the umbilication that is seen with molluscum contagiosum.

Cases of lichen nitidus clear up spontaneously, although usually months to years after diagnosis. Lichen nitidus is not contagious. Reassurance is, however, important as many patients may have experienced misdiagnosis and have concerns about sexual transmission because of the location of the papules on their genitals.

Treatment is often unnecessary. However, if itching is problematic, topical steroids and other topical antipruritics may be used. Topical hydrocortisone 2.5% cream or ointment for skin folds and genitals may be safely used, as well as topical triamcinolone 0.1% for the trunk and extremities. Pramoxine lotion (Sarna) is an over-the-counter nonsteroidal antipruritic. Oral nonsedating antihistamines can also be used as an adjunct.

This patient was reassured that the lesions were not contagious. Due to the itching, he was started on the pramoxine lotion twice daily, as needed, and the lesions cleared in about 6 months.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

The miniscule papules arising suddenly on the trunk and genitals with linear arrays and clusters are clinically consistent with lichen nitidus, an uncommon eruption without a clear etiology.

Presentations may be focal or widespread and range from mildly itchy to asymptomatic. Children and young adults are most often affected. Linear arrays may appear in response to the trauma of scratching, which is termed the Koebner phenomenon. The differential diagnosis includes molluscum contagiosum, lichen planus, and lichen spinulosis. Usually these conditions can be distinguished clinically, but a biopsy would differentiate them, if needed. It’s worth noting, too, that lichen nitidus papules are monomorphic and lack the umbilication that is seen with molluscum contagiosum.

Cases of lichen nitidus clear up spontaneously, although usually months to years after diagnosis. Lichen nitidus is not contagious. Reassurance is, however, important as many patients may have experienced misdiagnosis and have concerns about sexual transmission because of the location of the papules on their genitals.

Treatment is often unnecessary. However, if itching is problematic, topical steroids and other topical antipruritics may be used. Topical hydrocortisone 2.5% cream or ointment for skin folds and genitals may be safely used, as well as topical triamcinolone 0.1% for the trunk and extremities. Pramoxine lotion (Sarna) is an over-the-counter nonsteroidal antipruritic. Oral nonsedating antihistamines can also be used as an adjunct.

This patient was reassured that the lesions were not contagious. Due to the itching, he was started on the pramoxine lotion twice daily, as needed, and the lesions cleared in about 6 months.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

The miniscule papules arising suddenly on the trunk and genitals with linear arrays and clusters are clinically consistent with lichen nitidus, an uncommon eruption without a clear etiology.

Presentations may be focal or widespread and range from mildly itchy to asymptomatic. Children and young adults are most often affected. Linear arrays may appear in response to the trauma of scratching, which is termed the Koebner phenomenon. The differential diagnosis includes molluscum contagiosum, lichen planus, and lichen spinulosis. Usually these conditions can be distinguished clinically, but a biopsy would differentiate them, if needed. It’s worth noting, too, that lichen nitidus papules are monomorphic and lack the umbilication that is seen with molluscum contagiosum.

Cases of lichen nitidus clear up spontaneously, although usually months to years after diagnosis. Lichen nitidus is not contagious. Reassurance is, however, important as many patients may have experienced misdiagnosis and have concerns about sexual transmission because of the location of the papules on their genitals.

Treatment is often unnecessary. However, if itching is problematic, topical steroids and other topical antipruritics may be used. Topical hydrocortisone 2.5% cream or ointment for skin folds and genitals may be safely used, as well as topical triamcinolone 0.1% for the trunk and extremities. Pramoxine lotion (Sarna) is an over-the-counter nonsteroidal antipruritic. Oral nonsedating antihistamines can also be used as an adjunct.

This patient was reassured that the lesions were not contagious. Due to the itching, he was started on the pramoxine lotion twice daily, as needed, and the lesions cleared in about 6 months.

‌

Text and photos courtesy of Jonathan Karnes, MD, medical director, MDFMR Dermatology Services, Augusta, ME. (Photo copyright retained.)

Initial evidence suggests that the deliberate delays in melanoma care that occurred during the COVID-19 shelter-in-place lockdown last spring had a significant negative impact on patient outcomes, Rebecca I. Hartman, MD, MPH, said at a virtual forum on cutaneous malignancies jointly presented by Postgraduate Institute for Medicine and Global Academy for Medication Education.

This is not what National Comprehensive Cancer Network officials expected when they issued short-term recommendations on how to manage cutaneous melanoma during the first wave of the COVID-19 pandemic. Those recommendations for restriction of care, which Dr. Hartman characterized as “pretty significant changes from how we typically practice melanoma care in the U.S.,” came at a time when there was justifiable concern that the first COVID-19 surge would strain the U.S. health care system beyond the breaking point.

The rationale given for the NCCN recommendations was that most time-to-treat studies have shown no adverse patient outcomes for 90-day delays in treatment, even for thicker melanomas. But those studies, all retrospective, have been called into question. And the first real-world data on the impact of care restrictions during the lockdown, reported by Italian dermatologists, highlights adverse effects with potentially far-reaching consequences, noted Dr. Hartman, director of melanoma epidemiology at Brigham and Women’s Hospital and a dermatologist, Harvard University, Boston.

Analysis of the impact of lockdown-induced delays in melanoma care is not merely an academic exercise, she added. While everyone hopes that the spring 2020 COVID-19 shelter-in-place was a once-in-a-lifetime event, there’s no guarantee that will be the case. Moreover, the lockdown provides a natural experiment addressing the possible consequences of melanoma care delays on patient outcomes, a topic that for ethical reasons could never be addressed in a randomized trial.

The short-term NCCN recommendations included the use of excisional biopsies for melanoma diagnosis whenever possible; and delay of up to 3 months for wide local excision of in situ melanoma, any invasive melanoma with negative margins, and even T1 melanomas with positive margins provided the bulk of the lesion had been excised. The guidance also suggested delaying sentinel lymph node biopsy (SLNB), along with increased use of neoadjuvant therapy in patients with clinically palpable regional lymph nodes in order to delay surgery for up to 8 weeks. Single-agent systemic therapy at the least-frequent dosing was advised in order to minimize toxicity and reduce the need for additional health care resources: for example, nivolumab (Opdivo) at 480 mg every 4 weeks instead of every 2 weeks, and pembrolizumab (Keytruda) at 400 mg every 6 weeks, rather than every 3 weeks.

So, that’s what the NCCN recommended. Here’s what actually happened during shelter-in-place as captured in Dr. Hartman’s survey of 18 U.S. members of the Melanoma Prevention Working Group, all practicing dermatology in centers particularly hard-hit in the first wave of the pandemic: In-person new melanoma patient visits plunged from an average of 4.83 per week per provider to 0.83 per week. Telemedicine visits with new melanoma patients went from zero prepandemic to 0.67 visits per week per provider, which doesn’t come close to making up for the drop in in-person visits. Interestingly, two respondents reported turning to gene-expression profile testing for patient prognostication because of delays in SLNB.

Wide local excision was delayed by an average of 6 weeks in roughly one-third of melanoma patients with early tumor stage disease, regardless of margin status. For patients with stage T1b disease, wide local excision was typically performed on time during shelter-in-place; however, SLNB was delayed by an average of 5 weeks in 22% of patients with positive margins and 28% of those with negative margins. In contrast, 80% of patients with more advanced T2-T4 melanoma underwent on-schedule definitive management with wide local excision and SLNB, Dr. Hartman reported.

Critics have taken issue with the NCCN’s conclusion that most time-to-treatment studies show no harm arising from 90-day treatment delays. A review of the relevant published literature by Dr. Hartman’s Harvard colleagues, published in July, found that the evidence is mixed. “There is insufficient evidence to definitively conclude that delayed wide resection after gross removal of the primary melanoma is without harm,” they concluded in the review.

Spanish dermatologists performed a modeling study in order to estimate the potential impact of COVID-19 lockdowns on 5- and 10-year survival of melanoma patients. Using the growth rate of a random sample of 1,000 melanomas to model estimates of tumor thickness after various delays, coupled with American Joint Committee on Cancer survival data for different T stages, they estimated that 5-year survival would be reduced from 94.2% to 92.3% with a 90-day delay in diagnosis, and that 10-year survival would drop from 90.0% to 87.6%.

But that’s merely modeling. Francesco Ricci, MD, PhD, and colleagues from the melanoma unit at the Istituto Dermopatico dell’Immacolata, Rome, have provided a first look at the real-world impact of the lockdown. In the prelockdown period of January through March 9th, 2020, the referral center averaged 2.3 new melanoma diagnoses per day. During the Rome lockdown, from March 10th through May 3rd, this figure dropped to a mean of 0.6 melanoma diagnoses per day. Postlockdown, from May 4th to June 6th, the average climbed to 1.3 per day. The rate of newly diagnosed nodular melanoma was 5.5-fold greater postlockdown, compared with prelockdown; the rate of ulcerated melanoma was 4.9-fold greater.

“We can hypothesize that this may have been due to delays in diagnosis and care,” Dr. Hartman commented. “This is important because we know that nodular melanoma as well as ulceration tend to have a worse prognosis in terms of mortality.”

The mean Breslow thickness of newly diagnosed melanomas was 0.88 mm prelockdown, 0.66 mm during lockdown, and 1.96 mm postlockdown. The investigators speculated that the reduced Breslow thickness of melanomas diagnosed during lockdown might be explained by a greater willingness of more health-conscious people to defy the shelter-in-place instructions because of their concern about a suspicious skin lesion. “Though it is way too early to gauge the consequences of such diagnostic delay, should this issue be neglected, dermatologists and their patients may pay a higher price later with increased morbidity, mortality, and financial burden,” according to the investigators.

Dr. Hartman observed that it will be important to learn whether similar experiences occurred elsewhere during lockdown.

Another speaker, John M. Kirkwood, MD, said he has seen several melanoma patients referred from outside centers who had delays of up to 3 months in sentinel lymph node management of T2 and T3 tumors during lockdown who now have widespread metastatic disease.

“Now, is that anecdotal? I don’t know, it’s just worrisome to me,” commented Dr. Kirkwood, professor of medicine, dermatology, and translational science at the University of Pittsburgh.

Merrick Ross, MD, professor of surgical oncology at M.D. Anderson Cancer Center, Houston, recalled, “There was a period of time [during the lockdown] when we weren’t allowed to do certain elective procedures, if you want to call cancer surgery elective.”

“It’s too soon to talk about outcomes because a lot of patients are still in the process of being treated after what I would consider a significant delay in diagnosis,” the surgeon added.

An audience member asked if there will be an opportunity to see data on the damage done by delaying melanoma management as compared to lives saved through the lockdown for COVID-19. Dr. Ross replied that M.D. Anderson is in the midst of an institution-wide study analyzing the delay in diagnosis of a range of cancers.

“In our melanoma center it is absolutely clear, although we’re still collecting data, that the median tumor thickness is much higher since the lockdown,” Dr. Ross commented.

Dr. Hartman said she and her coinvestigators in the Melanoma Prevention Working Group are attempting to tally up the damage done via the lockdown by delaying melanoma diagnosis and treatment. But she agreed with the questioner that the most important thing is overall net lives saved through shelter-in-place.

“I’m sure that, separately, nondermatologists – perhaps infectious disease doctors and internists – are looking at how many lives were saved by the lockdown policy. So I do think all that data will come out,” Dr. Hartman predicted.

She reported having no financial conflicts regarding her presentation.

Global Academy for Medical Education and this news organization are owned by the same company.
 

[email protected]

SOURCE: Hartman, R. Cutaneous malignancies forum.

Initial evidence suggests that the deliberate delays in melanoma care that occurred during the COVID-19 shelter-in-place lockdown last spring had a significant negative impact on patient outcomes, Rebecca I. Hartman, MD, MPH, said at a virtual forum on cutaneous malignancies jointly presented by Postgraduate Institute for Medicine and Global Academy for Medication Education.

This is not what National Comprehensive Cancer Network officials expected when they issued short-term recommendations on how to manage cutaneous melanoma during the first wave of the COVID-19 pandemic. Those recommendations for restriction of care, which Dr. Hartman characterized as “pretty significant changes from how we typically practice melanoma care in the U.S.,” came at a time when there was justifiable concern that the first COVID-19 surge would strain the U.S. health care system beyond the breaking point.

The rationale given for the NCCN recommendations was that most time-to-treat studies have shown no adverse patient outcomes for 90-day delays in treatment, even for thicker melanomas. But those studies, all retrospective, have been called into question. And the first real-world data on the impact of care restrictions during the lockdown, reported by Italian dermatologists, highlights adverse effects with potentially far-reaching consequences, noted Dr. Hartman, director of melanoma epidemiology at Brigham and Women’s Hospital and a dermatologist, Harvard University, Boston.

Analysis of the impact of lockdown-induced delays in melanoma care is not merely an academic exercise, she added. While everyone hopes that the spring 2020 COVID-19 shelter-in-place was a once-in-a-lifetime event, there’s no guarantee that will be the case. Moreover, the lockdown provides a natural experiment addressing the possible consequences of melanoma care delays on patient outcomes, a topic that for ethical reasons could never be addressed in a randomized trial.

The short-term NCCN recommendations included the use of excisional biopsies for melanoma diagnosis whenever possible; and delay of up to 3 months for wide local excision of in situ melanoma, any invasive melanoma with negative margins, and even T1 melanomas with positive margins provided the bulk of the lesion had been excised. The guidance also suggested delaying sentinel lymph node biopsy (SLNB), along with increased use of neoadjuvant therapy in patients with clinically palpable regional lymph nodes in order to delay surgery for up to 8 weeks. Single-agent systemic therapy at the least-frequent dosing was advised in order to minimize toxicity and reduce the need for additional health care resources: for example, nivolumab (Opdivo) at 480 mg every 4 weeks instead of every 2 weeks, and pembrolizumab (Keytruda) at 400 mg every 6 weeks, rather than every 3 weeks.

So, that’s what the NCCN recommended. Here’s what actually happened during shelter-in-place as captured in Dr. Hartman’s survey of 18 U.S. members of the Melanoma Prevention Working Group, all practicing dermatology in centers particularly hard-hit in the first wave of the pandemic: In-person new melanoma patient visits plunged from an average of 4.83 per week per provider to 0.83 per week. Telemedicine visits with new melanoma patients went from zero prepandemic to 0.67 visits per week per provider, which doesn’t come close to making up for the drop in in-person visits. Interestingly, two respondents reported turning to gene-expression profile testing for patient prognostication because of delays in SLNB.

Wide local excision was delayed by an average of 6 weeks in roughly one-third of melanoma patients with early tumor stage disease, regardless of margin status. For patients with stage T1b disease, wide local excision was typically performed on time during shelter-in-place; however, SLNB was delayed by an average of 5 weeks in 22% of patients with positive margins and 28% of those with negative margins. In contrast, 80% of patients with more advanced T2-T4 melanoma underwent on-schedule definitive management with wide local excision and SLNB, Dr. Hartman reported.

Critics have taken issue with the NCCN’s conclusion that most time-to-treatment studies show no harm arising from 90-day treatment delays. A review of the relevant published literature by Dr. Hartman’s Harvard colleagues, published in July, found that the evidence is mixed. “There is insufficient evidence to definitively conclude that delayed wide resection after gross removal of the primary melanoma is without harm,” they concluded in the review.

Spanish dermatologists performed a modeling study in order to estimate the potential impact of COVID-19 lockdowns on 5- and 10-year survival of melanoma patients. Using the growth rate of a random sample of 1,000 melanomas to model estimates of tumor thickness after various delays, coupled with American Joint Committee on Cancer survival data for different T stages, they estimated that 5-year survival would be reduced from 94.2% to 92.3% with a 90-day delay in diagnosis, and that 10-year survival would drop from 90.0% to 87.6%.

But that’s merely modeling. Francesco Ricci, MD, PhD, and colleagues from the melanoma unit at the Istituto Dermopatico dell’Immacolata, Rome, have provided a first look at the real-world impact of the lockdown. In the prelockdown period of January through March 9th, 2020, the referral center averaged 2.3 new melanoma diagnoses per day. During the Rome lockdown, from March 10th through May 3rd, this figure dropped to a mean of 0.6 melanoma diagnoses per day. Postlockdown, from May 4th to June 6th, the average climbed to 1.3 per day. The rate of newly diagnosed nodular melanoma was 5.5-fold greater postlockdown, compared with prelockdown; the rate of ulcerated melanoma was 4.9-fold greater.

“We can hypothesize that this may have been due to delays in diagnosis and care,” Dr. Hartman commented. “This is important because we know that nodular melanoma as well as ulceration tend to have a worse prognosis in terms of mortality.”

The mean Breslow thickness of newly diagnosed melanomas was 0.88 mm prelockdown, 0.66 mm during lockdown, and 1.96 mm postlockdown. The investigators speculated that the reduced Breslow thickness of melanomas diagnosed during lockdown might be explained by a greater willingness of more health-conscious people to defy the shelter-in-place instructions because of their concern about a suspicious skin lesion. “Though it is way too early to gauge the consequences of such diagnostic delay, should this issue be neglected, dermatologists and their patients may pay a higher price later with increased morbidity, mortality, and financial burden,” according to the investigators.

Dr. Hartman observed that it will be important to learn whether similar experiences occurred elsewhere during lockdown.

Another speaker, John M. Kirkwood, MD, said he has seen several melanoma patients referred from outside centers who had delays of up to 3 months in sentinel lymph node management of T2 and T3 tumors during lockdown who now have widespread metastatic disease.

“Now, is that anecdotal? I don’t know, it’s just worrisome to me,” commented Dr. Kirkwood, professor of medicine, dermatology, and translational science at the University of Pittsburgh.

Merrick Ross, MD, professor of surgical oncology at M.D. Anderson Cancer Center, Houston, recalled, “There was a period of time [during the lockdown] when we weren’t allowed to do certain elective procedures, if you want to call cancer surgery elective.”

“It’s too soon to talk about outcomes because a lot of patients are still in the process of being treated after what I would consider a significant delay in diagnosis,” the surgeon added.

An audience member asked if there will be an opportunity to see data on the damage done by delaying melanoma management as compared to lives saved through the lockdown for COVID-19. Dr. Ross replied that M.D. Anderson is in the midst of an institution-wide study analyzing the delay in diagnosis of a range of cancers.

“In our melanoma center it is absolutely clear, although we’re still collecting data, that the median tumor thickness is much higher since the lockdown,” Dr. Ross commented.

Dr. Hartman said she and her coinvestigators in the Melanoma Prevention Working Group are attempting to tally up the damage done via the lockdown by delaying melanoma diagnosis and treatment. But she agreed with the questioner that the most important thing is overall net lives saved through shelter-in-place.

“I’m sure that, separately, nondermatologists – perhaps infectious disease doctors and internists – are looking at how many lives were saved by the lockdown policy. So I do think all that data will come out,” Dr. Hartman predicted.

She reported having no financial conflicts regarding her presentation.

Global Academy for Medical Education and this news organization are owned by the same company.
 

[email protected]

SOURCE: Hartman, R. Cutaneous malignancies forum.

Initial evidence suggests that the deliberate delays in melanoma care that occurred during the COVID-19 shelter-in-place lockdown last spring had a significant negative impact on patient outcomes, Rebecca I. Hartman, MD, MPH, said at a virtual forum on cutaneous malignancies jointly presented by Postgraduate Institute for Medicine and Global Academy for Medication Education.

This is not what National Comprehensive Cancer Network officials expected when they issued short-term recommendations on how to manage cutaneous melanoma during the first wave of the COVID-19 pandemic. Those recommendations for restriction of care, which Dr. Hartman characterized as “pretty significant changes from how we typically practice melanoma care in the U.S.,” came at a time when there was justifiable concern that the first COVID-19 surge would strain the U.S. health care system beyond the breaking point.

The rationale given for the NCCN recommendations was that most time-to-treat studies have shown no adverse patient outcomes for 90-day delays in treatment, even for thicker melanomas. But those studies, all retrospective, have been called into question. And the first real-world data on the impact of care restrictions during the lockdown, reported by Italian dermatologists, highlights adverse effects with potentially far-reaching consequences, noted Dr. Hartman, director of melanoma epidemiology at Brigham and Women’s Hospital and a dermatologist, Harvard University, Boston.

Analysis of the impact of lockdown-induced delays in melanoma care is not merely an academic exercise, she added. While everyone hopes that the spring 2020 COVID-19 shelter-in-place was a once-in-a-lifetime event, there’s no guarantee that will be the case. Moreover, the lockdown provides a natural experiment addressing the possible consequences of melanoma care delays on patient outcomes, a topic that for ethical reasons could never be addressed in a randomized trial.

The short-term NCCN recommendations included the use of excisional biopsies for melanoma diagnosis whenever possible; and delay of up to 3 months for wide local excision of in situ melanoma, any invasive melanoma with negative margins, and even T1 melanomas with positive margins provided the bulk of the lesion had been excised. The guidance also suggested delaying sentinel lymph node biopsy (SLNB), along with increased use of neoadjuvant therapy in patients with clinically palpable regional lymph nodes in order to delay surgery for up to 8 weeks. Single-agent systemic therapy at the least-frequent dosing was advised in order to minimize toxicity and reduce the need for additional health care resources: for example, nivolumab (Opdivo) at 480 mg every 4 weeks instead of every 2 weeks, and pembrolizumab (Keytruda) at 400 mg every 6 weeks, rather than every 3 weeks.

So, that’s what the NCCN recommended. Here’s what actually happened during shelter-in-place as captured in Dr. Hartman’s survey of 18 U.S. members of the Melanoma Prevention Working Group, all practicing dermatology in centers particularly hard-hit in the first wave of the pandemic: In-person new melanoma patient visits plunged from an average of 4.83 per week per provider to 0.83 per week. Telemedicine visits with new melanoma patients went from zero prepandemic to 0.67 visits per week per provider, which doesn’t come close to making up for the drop in in-person visits. Interestingly, two respondents reported turning to gene-expression profile testing for patient prognostication because of delays in SLNB.

Wide local excision was delayed by an average of 6 weeks in roughly one-third of melanoma patients with early tumor stage disease, regardless of margin status. For patients with stage T1b disease, wide local excision was typically performed on time during shelter-in-place; however, SLNB was delayed by an average of 5 weeks in 22% of patients with positive margins and 28% of those with negative margins. In contrast, 80% of patients with more advanced T2-T4 melanoma underwent on-schedule definitive management with wide local excision and SLNB, Dr. Hartman reported.

Critics have taken issue with the NCCN’s conclusion that most time-to-treatment studies show no harm arising from 90-day treatment delays. A review of the relevant published literature by Dr. Hartman’s Harvard colleagues, published in July, found that the evidence is mixed. “There is insufficient evidence to definitively conclude that delayed wide resection after gross removal of the primary melanoma is without harm,” they concluded in the review.

Spanish dermatologists performed a modeling study in order to estimate the potential impact of COVID-19 lockdowns on 5- and 10-year survival of melanoma patients. Using the growth rate of a random sample of 1,000 melanomas to model estimates of tumor thickness after various delays, coupled with American Joint Committee on Cancer survival data for different T stages, they estimated that 5-year survival would be reduced from 94.2% to 92.3% with a 90-day delay in diagnosis, and that 10-year survival would drop from 90.0% to 87.6%.

But that’s merely modeling. Francesco Ricci, MD, PhD, and colleagues from the melanoma unit at the Istituto Dermopatico dell’Immacolata, Rome, have provided a first look at the real-world impact of the lockdown. In the prelockdown period of January through March 9th, 2020, the referral center averaged 2.3 new melanoma diagnoses per day. During the Rome lockdown, from March 10th through May 3rd, this figure dropped to a mean of 0.6 melanoma diagnoses per day. Postlockdown, from May 4th to June 6th, the average climbed to 1.3 per day. The rate of newly diagnosed nodular melanoma was 5.5-fold greater postlockdown, compared with prelockdown; the rate of ulcerated melanoma was 4.9-fold greater.

“We can hypothesize that this may have been due to delays in diagnosis and care,” Dr. Hartman commented. “This is important because we know that nodular melanoma as well as ulceration tend to have a worse prognosis in terms of mortality.”

The mean Breslow thickness of newly diagnosed melanomas was 0.88 mm prelockdown, 0.66 mm during lockdown, and 1.96 mm postlockdown. The investigators speculated that the reduced Breslow thickness of melanomas diagnosed during lockdown might be explained by a greater willingness of more health-conscious people to defy the shelter-in-place instructions because of their concern about a suspicious skin lesion. “Though it is way too early to gauge the consequences of such diagnostic delay, should this issue be neglected, dermatologists and their patients may pay a higher price later with increased morbidity, mortality, and financial burden,” according to the investigators.

Dr. Hartman observed that it will be important to learn whether similar experiences occurred elsewhere during lockdown.

Another speaker, John M. Kirkwood, MD, said he has seen several melanoma patients referred from outside centers who had delays of up to 3 months in sentinel lymph node management of T2 and T3 tumors during lockdown who now have widespread metastatic disease.

“Now, is that anecdotal? I don’t know, it’s just worrisome to me,” commented Dr. Kirkwood, professor of medicine, dermatology, and translational science at the University of Pittsburgh.

Merrick Ross, MD, professor of surgical oncology at M.D. Anderson Cancer Center, Houston, recalled, “There was a period of time [during the lockdown] when we weren’t allowed to do certain elective procedures, if you want to call cancer surgery elective.”

“It’s too soon to talk about outcomes because a lot of patients are still in the process of being treated after what I would consider a significant delay in diagnosis,” the surgeon added.

An audience member asked if there will be an opportunity to see data on the damage done by delaying melanoma management as compared to lives saved through the lockdown for COVID-19. Dr. Ross replied that M.D. Anderson is in the midst of an institution-wide study analyzing the delay in diagnosis of a range of cancers.

“In our melanoma center it is absolutely clear, although we’re still collecting data, that the median tumor thickness is much higher since the lockdown,” Dr. Ross commented.

Dr. Hartman said she and her coinvestigators in the Melanoma Prevention Working Group are attempting to tally up the damage done via the lockdown by delaying melanoma diagnosis and treatment. But she agreed with the questioner that the most important thing is overall net lives saved through shelter-in-place.

“I’m sure that, separately, nondermatologists – perhaps infectious disease doctors and internists – are looking at how many lives were saved by the lockdown policy. So I do think all that data will come out,” Dr. Hartman predicted.

She reported having no financial conflicts regarding her presentation.

Global Academy for Medical Education and this news organization are owned by the same company.
 

[email protected]

SOURCE: Hartman, R. Cutaneous malignancies forum.

Pruritus, defined as a sensation that induces a desire to scratch¹ and classified as acute or chronic (lasting > 6 weeks),² is one of the most common complaints among primary care patients: Approximately 1% of ambulatory visits in the United States are linked to pruritus.³

Chronic pruritus impairs quality of life; its impact has been compared to that of chronic pain.⁴ Treatment should therefore be instituted promptly. Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition, as we describe here. When persistent pruritus is refractory to treatment, systemic causes should be fully explored.

In this article, we discuss the pathogenesis and management of pruritus without skin eruption in the adult nonpregnant patient. We also present practice recommendations to help you determine whether your patient’s pruritus is indicative of a serious systemic condition.

An incomplete understanding of the pathophysiology of pruritus

The pathophysiology of pruritus is not fully understood. It is generally recognized, however, that pruritus starts in the peripheral nerves located in the dermal–epidermal junction of the skin.⁵ The sensation is then transmitted along unmyelinated slow-conducting C fibers to the dorsal horn of the spinal cord.^5,6 There are 2 types of C fibers that transmit the itch impulse⁶: A histamine-dependent type and a non-­histamine-dependent type, which might explain why pruritus can be refractory to antihistamine treatment.⁶

Once the itch impulse has moved from the spinal cord, it travels along the spinothalamic tract up to the contralateral thalamus.¹ From there, the impulse ascends to the cerebral cortex.¹ In the cortex, the impulse triggers multiple areas of the brain, such as those responsible for sensation, motor function, reward, memory, and emotion.⁷

Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition.

Several chemical mediators have been found to be peripheral and central inducers of pruritus: histamine, endogenous opioids, substance P, and serotonin.² There are indications that certain receptors, such as mu-opioid receptors and kappa-opioid receptors, are key contributors to itch as well.²

A diverse etiology

The International Forum for the Study of Itch (IFSI) has established 6 main categories of causes of pruritus(TABLE 1)²:

• dermatologic
• systemic
• neurologic
• psychogenic
• mixed
• other.

Continue to: In this review...

In this review, we focus on the work-up and management of 3 of those categories: systemic, neurologic, and psychogenic causes of pruritus.

Systemic causes

Research has shown that 14% to 24% of patients who seek the care of a dermatologist for chronic itch without skin lesions have a systemic illness.⁸

Renal disease. Approximately 40% of patients with end-stage renal disease who are on hemodialysis or peritoneal dialysis have uremic pruritus.2 The itch is mostly generalized but can be pronounced on the back. For most patients, the itch is worse at night, causing a major impact on quality of life.⁶

Liver disease. In hepatic disease, there is often impairment in the secretion of bile, which can lead to cholestatic pruritus.² This condition commonly affects the hands and feet first; later, it becomes generalized.² Cholestatic pruritus can be elicited by tight-fitting clothing. Relief is not achieved by scratching.⁹ This type of itch effects 70% of patients with primary biliary cirrhosis and 15% of patients with hepatitis C infection.⁹

Hematologic disorders. Pruritus is a hallmark symptom of polycythemia rubra vera. Almost 50% of patients with this disorder report pruritus that occurs after exposure to water⁹; aquagenic pruritus can precede the formal diagnosis of polycythemia rubra vera by years.² It has been speculated that platelet aggregation in this disorder leads to release of serotonin and histamine, which, in turn, causes itch.⁹

Continue to: Endocrine disorders

Endocrine disorders. Approximately 4% to 11% of patients with thyrotoxicosis have pruritus.¹ It has been suggested that vasodilation, increased skin temperature, and a decreased itch threshold from untreated Graves disease might be inciting factors.

Malignancy. In generalized chronic pruritus without a known cause, strongly consider the likelihood of underlying malignancy^8,10; for 10% of these patients, their chronic pruritus is a paraneoplastic sign. Paraneoplastic pruritus is characterized as an itch that predates clinical onset, or occurs early in the course, of a malignancy.⁹ The condition is most strongly linked to cancers of the liver, gallbladder, biliary tract, hematologic system, and skin.¹¹

Palpate the liver, spleen, lymph nodes, and thyroid for organomegaly, which could indicate a serious systemic condition as the cause of pruritus.

Chronic pruritus affects 30% of patients with Hodgkin lymphoma.⁹ General pruritus can precede this diagnosis by months, even years.¹ In Hodgkin lymphoma patients who are in remission, a return of pruritic symptoms can be a harbinger of recurrence.⁹

Neurologic causes

A recent study found that 8% to 15% of patients referred to a dermatology clinic for chronic pruritus without skin eruption had underlying neurologic pathology.¹² Although the specific mechanisms of neuropathic itch are still poorly understood, it has been theorized that the itch emanates from neuronal damage, which can come from peripheral or central nervous system lesions.⁹

Brachioradial pruritus. There are divergent theories about the etiology of brachioradial pruritus. One hypothesis is that the condition is caused by cervical nerve-root impingement at the level of C5-C8 that leads to nerve damage²; another is that chronic exposure to sunlight causes injury to peripheral cutaneous nerves.² Brachioradial pruritus is localized to the dorsolateral forearm; it can also involve the neck, back, shoulder, upper arm, and chest, unilaterally and bilaterally. This pruritus can be intermittent and become worse upon exposure to sunlight.²

Continue to: Notalgia paresthetica

Notalgia paresthetica. This condition might also cause neuropathic pruritus as a consequence of nerve impingement. The itch of notalgia paresthesia is located on the skin, medial to the scapular border on the upper or mid-back.² It has been postulated that the itch is caused by nerve entrapment of the posterior rami of spinal nerves arising from T2-T6.⁹ However, another theory suggests that the itch is caused by damage to peripheral nerves.⁹ The itch of notalgia paresthetica can wax and wane.²

Poststroke pruritus. Brain lesions, most often caused by stroke, can cause neuropathic itch. One of the best-known syndromes related to poststroke itch is Wallenberg syndrome (ischemia from a lateral medullary infarction), which typically presents with itch, thermalgic hypoesthesia of the face, cerebellar dysfunction, nausea, and vomiting.⁷

Shingles. More than one-half of patients who develop postherpetic neuralgia as a consequence of a herpes zoster infection also develop neuropathic pruritus.⁹ It is thought that postherpetic pruritus shares a comparable pathophysiology with postherpetic neuralgia, in which neurons involved in itch stimuli become damaged.⁷

Diabetes mellitus. Pruritus from diabetes can be classified as systemic or neuropathic. Diabetes is one of the most common causes of small-fiber polyneuropathy, which can cause neuropathic pruritus.¹³

Multiple sclerosis. Central nervous system lesions that affect sensory pathways can lead to neuropathic itch in multiple sclerosis. Patients can have severe episodes of generalized pruritus. It has been hypothesized that the neuropathic itch in multiple sclerosis is induced by activation of artificial synapses in demyelinated areas.²

Continue to: Psychogenic pruritus

Chronic pruritus can be a comorbidity of psychiatric illness. A retrospective study found that pruritus occurs in 32% to 42% of psychiatric inpatients.¹⁴ Depression, anxiety, bipolar disorders, obsessive–compulsive disorders, somatoform disorders, psychosis, and substance abuse all have a strong link to psychogenic excoriation.¹⁵ Psychogenic excoriation, which can cause secondary skin lesions, occurs in psychiatric patients who excessively pick and scratch normal skin because they perceive an itch sensation or have a delusion of infestation.² Affected skin can be marked by scattered crusted lesions (FIGURE) anywhere on the body that the patient can reach—most commonly, the extremities.²

Delusion of infestation. Patients with a delusion of infestation have a strong belief that their body is infected by some kind of insect or microorganism.¹⁶ Before a diagnosis of delusion of infestation can be made, other organic causes must be excluded, including withdrawal from such substances as cocaine, amphetamines, and alcohol.¹⁶ Patients with a delusion of infestation can have, and maintain, a symptomatic response with continuing use of an atypical antipsychotic agent, including risperidone and olanzapine.¹⁷

Evaluation and diagnostic work-up

A thorough medical history, review of systems, medication review, social history, and family history are important when evaluating a patient with chronic pruritus.¹⁸ These items can be valuable in formulating a differential diagnosis, even before a physical examination.

Physical examination. The physical exam should include detailed inspection of the entire skin and hair¹⁸; such a comprehensive physical exam can determine whether the source of the itch is cutaneous.⁷ This, in turn, can help further narrow the differential diagnosis. It is crucial that the physical exam include palpation of the liver, spleen, lymph nodes, and thyroid for organomegaly,⁸ which could indicate a serious systemic condition, such as lymphoma.

The ice-pack sign—in which an ice pack applied to the pruritic area provides immediate relief—is considered pathognomonic for brachioradial pruritus.

The ice-pack sign—in which an ice pack is applied to the pruritic area, the patient experiences immediate relief of pruritus, and the itch returns soon after the ice pack is removed—is considered pathognomonic for brachioradial pruritus.¹⁹

Continue to: Chronic pruritus with abnormal findings...

Chronic pruritus with abnormal findings on the physical exam should prompt an initial work-up.¹⁸ Also consider an initial work-up for a patient with chronic pruritus whose symptom has not been relieved with conservative treatment.¹⁸

Laboratory testing. The initial laboratory work-up could include any of the following evaluations: complete blood count, measurement of thyroid-stimulating hormone, comprehensive metabolic panel (liver function, renal function, and the serum glucose level) and the erythrocyte sedimentation rate (TABLE 2).¹⁸ If warranted by the evaluation and physical exam, blood work can also include serologic studies for human immunodeficiency virus infection and ­hepatitis.¹⁷

Imaging. Chest radiography should be performed if there is suspicion of malignancy, such as lymphoma.⁷ Although brachioradial pruritus and notalgia paresthetica have been postulated to be caused by impingement of spinal nerves, obtaining spinal imaging, such as magnetic resonance imaging, as part of the initial work-up is not recommended; because spinal images might not show evidence of spinal disease, obtaining spinal imaging is not a requirement before treating brachioradial pruritus and notalgia paresthetica. Do consider spinal imaging, however, for patients in whom brachioradial pruritus or notalgia paresthetica is suspected and conservative treatment has not produced a response.

Treatment: Nondrug approaches, topicals, systemic agents

Start conservatively. Treatment of pruritus should begin with behavior modification and nonpharmacotherapeutic options (TABLE 3⁸). Educate the patient that scratching might cause secondary skin lesions; empowering them with that knowledge is sometimes enough to help break the scratching cycling—especially if the patient combines behavior modification with proper skin hydration with an emollient. To prevent secondary skin lesions through involuntary scratching, consider recommending that lesions be covered with an occlusive dressing or protective clothing.¹³

Stress has been shown to make chronic itch worse; therefore, stress-reduction activities, such as exercise, meditation, and yoga, might be helpful.20 For patients in whom pruritus has a psychological component, referral to a psychiatrist or psychologist might be therapeutic.

Continue to: When a patient complains...

When a patient complains of severe pruritus at first presentation, consider pharmacotherapy in conjunction with nonpharmacotherapeutic options. Several of the more effective topical therapies for pruritus^a are listed in TABLE 4.²⁰ Well-known systemic agents for this purpose are reviewed below and listed in TABLE 5.⁷

Systemic treatment

Antihistamines. A staple in the treatment of pruritus for many years, antihistamines are not effective for all causes; however, they are effective in treating paraneoplastic pruritus.²⁰ First-generation antihistamines, with their sedating effect, can be useful for patients who experience generalized pruritus at night.²⁰

Anticonvulsants. Gabapentin and pregabalin are analogs of the neurotransmitter gamma-aminobutyric acid.²⁰ This drug class is helpful in neuropathic pruritus specifically caused by impingements, such as brachioradial pruritus and notalgia paresthetica.²⁰ In addition, of all systemic therapies used to treat uremic pruritus, gabapentin has, in clinical trials, most consistently been found effective for uremic pruritus.⁶ (Note: Use renal dosing of gabapentin in patients with renal failure.)

Antidepressants. Selective serotonin reuptake inhibitors (SSRIs; eg, fluvoxamine, paroxetine, and sertraline) might cause itch to subside by increasing the serotonin level, which, in turn, works to decrease inflammatory substances that cause itch.⁷ SSRIs have been used to treat patients with psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.⁷

Start conservatively: Use behavior modification and nonpharmacotherapeutic options for pruritus first.

Tricyclic antidepressants (eg, amitriptyline and doxepin) lessen the itch by antagonizing histamine receptors and through anticholinergic mechanisms. Tricyclics are best used in the treatment of psychogenic and nocturnal itch.⁷

Continue to: Mirtazapine...

Mirtazapine, a tetracyclic antidepressant, works in patients with uremic pruritus, psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.¹

Substance P antagonist. Aprepitant, a neurokinin receptor I antagonist, is a newer agent that inhibits binding of the itch mediator substance P to the neurokinin receptor. The drug has been found helpful in patients with drug-induced, paraneoplastic, and brachioradial pruritus.⁷

Opioid-receptor agents. Naltrexone, as a mu opioid-receptor antagonist, has shown promise as a treatment for uremic pruritus and cholestatic pruritus. Nalfurafine, a kappa opioid-receptor agonist, is emerging as a possible therapy for uremic pruritus.⁷

Bile-acid sequestrants. A few small studies have shown that treatment with a bile-acid sequestrant, such as cholestyramine and ursodiol, induces moderate improvement in symptoms in patients with cholestatic pruritus.²¹

CORRESPONDENCE
Matasha Russell, MD, Department of Family and Community Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, 6431 Fannin Street, JJL 324, Houston, TX 77030; [email protected].

Pruritus, defined as a sensation that induces a desire to scratch¹ and classified as acute or chronic (lasting > 6 weeks),² is one of the most common complaints among primary care patients: Approximately 1% of ambulatory visits in the United States are linked to pruritus.³

Chronic pruritus impairs quality of life; its impact has been compared to that of chronic pain.⁴ Treatment should therefore be instituted promptly. Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition, as we describe here. When persistent pruritus is refractory to treatment, systemic causes should be fully explored.

In this article, we discuss the pathogenesis and management of pruritus without skin eruption in the adult nonpregnant patient. We also present practice recommendations to help you determine whether your patient’s pruritus is indicative of a serious systemic condition.

An incomplete understanding of the pathophysiology of pruritus

The pathophysiology of pruritus is not fully understood. It is generally recognized, however, that pruritus starts in the peripheral nerves located in the dermal–epidermal junction of the skin.⁵ The sensation is then transmitted along unmyelinated slow-conducting C fibers to the dorsal horn of the spinal cord.^5,6 There are 2 types of C fibers that transmit the itch impulse⁶: A histamine-dependent type and a non-­histamine-dependent type, which might explain why pruritus can be refractory to antihistamine treatment.⁶

Once the itch impulse has moved from the spinal cord, it travels along the spinothalamic tract up to the contralateral thalamus.¹ From there, the impulse ascends to the cerebral cortex.¹ In the cortex, the impulse triggers multiple areas of the brain, such as those responsible for sensation, motor function, reward, memory, and emotion.⁷

Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition.

Several chemical mediators have been found to be peripheral and central inducers of pruritus: histamine, endogenous opioids, substance P, and serotonin.² There are indications that certain receptors, such as mu-opioid receptors and kappa-opioid receptors, are key contributors to itch as well.²

A diverse etiology

The International Forum for the Study of Itch (IFSI) has established 6 main categories of causes of pruritus(TABLE 1)²:

• dermatologic
• systemic
• neurologic
• psychogenic
• mixed
• other.

Continue to: In this review...

In this review, we focus on the work-up and management of 3 of those categories: systemic, neurologic, and psychogenic causes of pruritus.

Systemic causes

Research has shown that 14% to 24% of patients who seek the care of a dermatologist for chronic itch without skin lesions have a systemic illness.⁸

Renal disease. Approximately 40% of patients with end-stage renal disease who are on hemodialysis or peritoneal dialysis have uremic pruritus.2 The itch is mostly generalized but can be pronounced on the back. For most patients, the itch is worse at night, causing a major impact on quality of life.⁶

Liver disease. In hepatic disease, there is often impairment in the secretion of bile, which can lead to cholestatic pruritus.² This condition commonly affects the hands and feet first; later, it becomes generalized.² Cholestatic pruritus can be elicited by tight-fitting clothing. Relief is not achieved by scratching.⁹ This type of itch effects 70% of patients with primary biliary cirrhosis and 15% of patients with hepatitis C infection.⁹

Hematologic disorders. Pruritus is a hallmark symptom of polycythemia rubra vera. Almost 50% of patients with this disorder report pruritus that occurs after exposure to water⁹; aquagenic pruritus can precede the formal diagnosis of polycythemia rubra vera by years.² It has been speculated that platelet aggregation in this disorder leads to release of serotonin and histamine, which, in turn, causes itch.⁹

Continue to: Endocrine disorders

Endocrine disorders. Approximately 4% to 11% of patients with thyrotoxicosis have pruritus.¹ It has been suggested that vasodilation, increased skin temperature, and a decreased itch threshold from untreated Graves disease might be inciting factors.

Malignancy. In generalized chronic pruritus without a known cause, strongly consider the likelihood of underlying malignancy^8,10; for 10% of these patients, their chronic pruritus is a paraneoplastic sign. Paraneoplastic pruritus is characterized as an itch that predates clinical onset, or occurs early in the course, of a malignancy.⁹ The condition is most strongly linked to cancers of the liver, gallbladder, biliary tract, hematologic system, and skin.¹¹

Palpate the liver, spleen, lymph nodes, and thyroid for organomegaly, which could indicate a serious systemic condition as the cause of pruritus.

Chronic pruritus affects 30% of patients with Hodgkin lymphoma.⁹ General pruritus can precede this diagnosis by months, even years.¹ In Hodgkin lymphoma patients who are in remission, a return of pruritic symptoms can be a harbinger of recurrence.⁹

Neurologic causes

A recent study found that 8% to 15% of patients referred to a dermatology clinic for chronic pruritus without skin eruption had underlying neurologic pathology.¹² Although the specific mechanisms of neuropathic itch are still poorly understood, it has been theorized that the itch emanates from neuronal damage, which can come from peripheral or central nervous system lesions.⁹

Brachioradial pruritus. There are divergent theories about the etiology of brachioradial pruritus. One hypothesis is that the condition is caused by cervical nerve-root impingement at the level of C5-C8 that leads to nerve damage²; another is that chronic exposure to sunlight causes injury to peripheral cutaneous nerves.² Brachioradial pruritus is localized to the dorsolateral forearm; it can also involve the neck, back, shoulder, upper arm, and chest, unilaterally and bilaterally. This pruritus can be intermittent and become worse upon exposure to sunlight.²

Continue to: Notalgia paresthetica

Notalgia paresthetica. This condition might also cause neuropathic pruritus as a consequence of nerve impingement. The itch of notalgia paresthesia is located on the skin, medial to the scapular border on the upper or mid-back.² It has been postulated that the itch is caused by nerve entrapment of the posterior rami of spinal nerves arising from T2-T6.⁹ However, another theory suggests that the itch is caused by damage to peripheral nerves.⁹ The itch of notalgia paresthetica can wax and wane.²

Poststroke pruritus. Brain lesions, most often caused by stroke, can cause neuropathic itch. One of the best-known syndromes related to poststroke itch is Wallenberg syndrome (ischemia from a lateral medullary infarction), which typically presents with itch, thermalgic hypoesthesia of the face, cerebellar dysfunction, nausea, and vomiting.⁷

Shingles. More than one-half of patients who develop postherpetic neuralgia as a consequence of a herpes zoster infection also develop neuropathic pruritus.⁹ It is thought that postherpetic pruritus shares a comparable pathophysiology with postherpetic neuralgia, in which neurons involved in itch stimuli become damaged.⁷

Diabetes mellitus. Pruritus from diabetes can be classified as systemic or neuropathic. Diabetes is one of the most common causes of small-fiber polyneuropathy, which can cause neuropathic pruritus.¹³

Multiple sclerosis. Central nervous system lesions that affect sensory pathways can lead to neuropathic itch in multiple sclerosis. Patients can have severe episodes of generalized pruritus. It has been hypothesized that the neuropathic itch in multiple sclerosis is induced by activation of artificial synapses in demyelinated areas.²

Continue to: Psychogenic pruritus

Chronic pruritus can be a comorbidity of psychiatric illness. A retrospective study found that pruritus occurs in 32% to 42% of psychiatric inpatients.¹⁴ Depression, anxiety, bipolar disorders, obsessive–compulsive disorders, somatoform disorders, psychosis, and substance abuse all have a strong link to psychogenic excoriation.¹⁵ Psychogenic excoriation, which can cause secondary skin lesions, occurs in psychiatric patients who excessively pick and scratch normal skin because they perceive an itch sensation or have a delusion of infestation.² Affected skin can be marked by scattered crusted lesions (FIGURE) anywhere on the body that the patient can reach—most commonly, the extremities.²

Delusion of infestation. Patients with a delusion of infestation have a strong belief that their body is infected by some kind of insect or microorganism.¹⁶ Before a diagnosis of delusion of infestation can be made, other organic causes must be excluded, including withdrawal from such substances as cocaine, amphetamines, and alcohol.¹⁶ Patients with a delusion of infestation can have, and maintain, a symptomatic response with continuing use of an atypical antipsychotic agent, including risperidone and olanzapine.¹⁷

Evaluation and diagnostic work-up

A thorough medical history, review of systems, medication review, social history, and family history are important when evaluating a patient with chronic pruritus.¹⁸ These items can be valuable in formulating a differential diagnosis, even before a physical examination.

Physical examination. The physical exam should include detailed inspection of the entire skin and hair¹⁸; such a comprehensive physical exam can determine whether the source of the itch is cutaneous.⁷ This, in turn, can help further narrow the differential diagnosis. It is crucial that the physical exam include palpation of the liver, spleen, lymph nodes, and thyroid for organomegaly,⁸ which could indicate a serious systemic condition, such as lymphoma.

The ice-pack sign—in which an ice pack applied to the pruritic area provides immediate relief—is considered pathognomonic for brachioradial pruritus.

The ice-pack sign—in which an ice pack is applied to the pruritic area, the patient experiences immediate relief of pruritus, and the itch returns soon after the ice pack is removed—is considered pathognomonic for brachioradial pruritus.¹⁹

Continue to: Chronic pruritus with abnormal findings...

Chronic pruritus with abnormal findings on the physical exam should prompt an initial work-up.¹⁸ Also consider an initial work-up for a patient with chronic pruritus whose symptom has not been relieved with conservative treatment.¹⁸

Laboratory testing. The initial laboratory work-up could include any of the following evaluations: complete blood count, measurement of thyroid-stimulating hormone, comprehensive metabolic panel (liver function, renal function, and the serum glucose level) and the erythrocyte sedimentation rate (TABLE 2).¹⁸ If warranted by the evaluation and physical exam, blood work can also include serologic studies for human immunodeficiency virus infection and ­hepatitis.¹⁷

Imaging. Chest radiography should be performed if there is suspicion of malignancy, such as lymphoma.⁷ Although brachioradial pruritus and notalgia paresthetica have been postulated to be caused by impingement of spinal nerves, obtaining spinal imaging, such as magnetic resonance imaging, as part of the initial work-up is not recommended; because spinal images might not show evidence of spinal disease, obtaining spinal imaging is not a requirement before treating brachioradial pruritus and notalgia paresthetica. Do consider spinal imaging, however, for patients in whom brachioradial pruritus or notalgia paresthetica is suspected and conservative treatment has not produced a response.

Treatment: Nondrug approaches, topicals, systemic agents

Start conservatively. Treatment of pruritus should begin with behavior modification and nonpharmacotherapeutic options (TABLE 3⁸). Educate the patient that scratching might cause secondary skin lesions; empowering them with that knowledge is sometimes enough to help break the scratching cycling—especially if the patient combines behavior modification with proper skin hydration with an emollient. To prevent secondary skin lesions through involuntary scratching, consider recommending that lesions be covered with an occlusive dressing or protective clothing.¹³

Stress has been shown to make chronic itch worse; therefore, stress-reduction activities, such as exercise, meditation, and yoga, might be helpful.20 For patients in whom pruritus has a psychological component, referral to a psychiatrist or psychologist might be therapeutic.

Continue to: When a patient complains...

When a patient complains of severe pruritus at first presentation, consider pharmacotherapy in conjunction with nonpharmacotherapeutic options. Several of the more effective topical therapies for pruritus^a are listed in TABLE 4.²⁰ Well-known systemic agents for this purpose are reviewed below and listed in TABLE 5.⁷

Systemic treatment

Antihistamines. A staple in the treatment of pruritus for many years, antihistamines are not effective for all causes; however, they are effective in treating paraneoplastic pruritus.²⁰ First-generation antihistamines, with their sedating effect, can be useful for patients who experience generalized pruritus at night.²⁰

Anticonvulsants. Gabapentin and pregabalin are analogs of the neurotransmitter gamma-aminobutyric acid.²⁰ This drug class is helpful in neuropathic pruritus specifically caused by impingements, such as brachioradial pruritus and notalgia paresthetica.²⁰ In addition, of all systemic therapies used to treat uremic pruritus, gabapentin has, in clinical trials, most consistently been found effective for uremic pruritus.⁶ (Note: Use renal dosing of gabapentin in patients with renal failure.)

Antidepressants. Selective serotonin reuptake inhibitors (SSRIs; eg, fluvoxamine, paroxetine, and sertraline) might cause itch to subside by increasing the serotonin level, which, in turn, works to decrease inflammatory substances that cause itch.⁷ SSRIs have been used to treat patients with psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.⁷

Start conservatively: Use behavior modification and nonpharmacotherapeutic options for pruritus first.

Tricyclic antidepressants (eg, amitriptyline and doxepin) lessen the itch by antagonizing histamine receptors and through anticholinergic mechanisms. Tricyclics are best used in the treatment of psychogenic and nocturnal itch.⁷

Continue to: Mirtazapine...

Mirtazapine, a tetracyclic antidepressant, works in patients with uremic pruritus, psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.¹

Substance P antagonist. Aprepitant, a neurokinin receptor I antagonist, is a newer agent that inhibits binding of the itch mediator substance P to the neurokinin receptor. The drug has been found helpful in patients with drug-induced, paraneoplastic, and brachioradial pruritus.⁷

Opioid-receptor agents. Naltrexone, as a mu opioid-receptor antagonist, has shown promise as a treatment for uremic pruritus and cholestatic pruritus. Nalfurafine, a kappa opioid-receptor agonist, is emerging as a possible therapy for uremic pruritus.⁷

Bile-acid sequestrants. A few small studies have shown that treatment with a bile-acid sequestrant, such as cholestyramine and ursodiol, induces moderate improvement in symptoms in patients with cholestatic pruritus.²¹

CORRESPONDENCE
Matasha Russell, MD, Department of Family and Community Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, 6431 Fannin Street, JJL 324, Houston, TX 77030; [email protected].

Pruritus, defined as a sensation that induces a desire to scratch¹ and classified as acute or chronic (lasting > 6 weeks),² is one of the most common complaints among primary care patients: Approximately 1% of ambulatory visits in the United States are linked to pruritus.³

Chronic pruritus impairs quality of life; its impact has been compared to that of chronic pain.⁴ Treatment should therefore be instituted promptly. Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition, as we describe here. When persistent pruritus is refractory to treatment, systemic causes should be fully explored.

In this article, we discuss the pathogenesis and management of pruritus without skin eruption in the adult nonpregnant patient. We also present practice recommendations to help you determine whether your patient’s pruritus is indicative of a serious systemic condition.

An incomplete understanding of the pathophysiology of pruritus

The pathophysiology of pruritus is not fully understood. It is generally recognized, however, that pruritus starts in the peripheral nerves located in the dermal–epidermal junction of the skin.⁵ The sensation is then transmitted along unmyelinated slow-conducting C fibers to the dorsal horn of the spinal cord.^5,6 There are 2 types of C fibers that transmit the itch impulse⁶: A histamine-dependent type and a non-­histamine-dependent type, which might explain why pruritus can be refractory to antihistamine treatment.⁶

Once the itch impulse has moved from the spinal cord, it travels along the spinothalamic tract up to the contralateral thalamus.¹ From there, the impulse ascends to the cerebral cortex.¹ In the cortex, the impulse triggers multiple areas of the brain, such as those responsible for sensation, motor function, reward, memory, and emotion.⁷

Although this condition might appear benign, chronic pruritus can be a symptom of a serious condition.

Several chemical mediators have been found to be peripheral and central inducers of pruritus: histamine, endogenous opioids, substance P, and serotonin.² There are indications that certain receptors, such as mu-opioid receptors and kappa-opioid receptors, are key contributors to itch as well.²

A diverse etiology

The International Forum for the Study of Itch (IFSI) has established 6 main categories of causes of pruritus(TABLE 1)²:

• dermatologic
• systemic
• neurologic
• psychogenic
• mixed
• other.

Continue to: In this review...

In this review, we focus on the work-up and management of 3 of those categories: systemic, neurologic, and psychogenic causes of pruritus.

Systemic causes

Research has shown that 14% to 24% of patients who seek the care of a dermatologist for chronic itch without skin lesions have a systemic illness.⁸

Renal disease. Approximately 40% of patients with end-stage renal disease who are on hemodialysis or peritoneal dialysis have uremic pruritus.2 The itch is mostly generalized but can be pronounced on the back. For most patients, the itch is worse at night, causing a major impact on quality of life.⁶

Liver disease. In hepatic disease, there is often impairment in the secretion of bile, which can lead to cholestatic pruritus.² This condition commonly affects the hands and feet first; later, it becomes generalized.² Cholestatic pruritus can be elicited by tight-fitting clothing. Relief is not achieved by scratching.⁹ This type of itch effects 70% of patients with primary biliary cirrhosis and 15% of patients with hepatitis C infection.⁹

Hematologic disorders. Pruritus is a hallmark symptom of polycythemia rubra vera. Almost 50% of patients with this disorder report pruritus that occurs after exposure to water⁹; aquagenic pruritus can precede the formal diagnosis of polycythemia rubra vera by years.² It has been speculated that platelet aggregation in this disorder leads to release of serotonin and histamine, which, in turn, causes itch.⁹

Continue to: Endocrine disorders

Endocrine disorders. Approximately 4% to 11% of patients with thyrotoxicosis have pruritus.¹ It has been suggested that vasodilation, increased skin temperature, and a decreased itch threshold from untreated Graves disease might be inciting factors.

Malignancy. In generalized chronic pruritus without a known cause, strongly consider the likelihood of underlying malignancy^8,10; for 10% of these patients, their chronic pruritus is a paraneoplastic sign. Paraneoplastic pruritus is characterized as an itch that predates clinical onset, or occurs early in the course, of a malignancy.⁹ The condition is most strongly linked to cancers of the liver, gallbladder, biliary tract, hematologic system, and skin.¹¹

Palpate the liver, spleen, lymph nodes, and thyroid for organomegaly, which could indicate a serious systemic condition as the cause of pruritus.

Chronic pruritus affects 30% of patients with Hodgkin lymphoma.⁹ General pruritus can precede this diagnosis by months, even years.¹ In Hodgkin lymphoma patients who are in remission, a return of pruritic symptoms can be a harbinger of recurrence.⁹

Neurologic causes

A recent study found that 8% to 15% of patients referred to a dermatology clinic for chronic pruritus without skin eruption had underlying neurologic pathology.¹² Although the specific mechanisms of neuropathic itch are still poorly understood, it has been theorized that the itch emanates from neuronal damage, which can come from peripheral or central nervous system lesions.⁹

Brachioradial pruritus. There are divergent theories about the etiology of brachioradial pruritus. One hypothesis is that the condition is caused by cervical nerve-root impingement at the level of C5-C8 that leads to nerve damage²; another is that chronic exposure to sunlight causes injury to peripheral cutaneous nerves.² Brachioradial pruritus is localized to the dorsolateral forearm; it can also involve the neck, back, shoulder, upper arm, and chest, unilaterally and bilaterally. This pruritus can be intermittent and become worse upon exposure to sunlight.²

Continue to: Notalgia paresthetica

Notalgia paresthetica. This condition might also cause neuropathic pruritus as a consequence of nerve impingement. The itch of notalgia paresthesia is located on the skin, medial to the scapular border on the upper or mid-back.² It has been postulated that the itch is caused by nerve entrapment of the posterior rami of spinal nerves arising from T2-T6.⁹ However, another theory suggests that the itch is caused by damage to peripheral nerves.⁹ The itch of notalgia paresthetica can wax and wane.²

Poststroke pruritus. Brain lesions, most often caused by stroke, can cause neuropathic itch. One of the best-known syndromes related to poststroke itch is Wallenberg syndrome (ischemia from a lateral medullary infarction), which typically presents with itch, thermalgic hypoesthesia of the face, cerebellar dysfunction, nausea, and vomiting.⁷

Shingles. More than one-half of patients who develop postherpetic neuralgia as a consequence of a herpes zoster infection also develop neuropathic pruritus.⁹ It is thought that postherpetic pruritus shares a comparable pathophysiology with postherpetic neuralgia, in which neurons involved in itch stimuli become damaged.⁷

Diabetes mellitus. Pruritus from diabetes can be classified as systemic or neuropathic. Diabetes is one of the most common causes of small-fiber polyneuropathy, which can cause neuropathic pruritus.¹³

Multiple sclerosis. Central nervous system lesions that affect sensory pathways can lead to neuropathic itch in multiple sclerosis. Patients can have severe episodes of generalized pruritus. It has been hypothesized that the neuropathic itch in multiple sclerosis is induced by activation of artificial synapses in demyelinated areas.²

Continue to: Psychogenic pruritus

Chronic pruritus can be a comorbidity of psychiatric illness. A retrospective study found that pruritus occurs in 32% to 42% of psychiatric inpatients.¹⁴ Depression, anxiety, bipolar disorders, obsessive–compulsive disorders, somatoform disorders, psychosis, and substance abuse all have a strong link to psychogenic excoriation.¹⁵ Psychogenic excoriation, which can cause secondary skin lesions, occurs in psychiatric patients who excessively pick and scratch normal skin because they perceive an itch sensation or have a delusion of infestation.² Affected skin can be marked by scattered crusted lesions (FIGURE) anywhere on the body that the patient can reach—most commonly, the extremities.²

Delusion of infestation. Patients with a delusion of infestation have a strong belief that their body is infected by some kind of insect or microorganism.¹⁶ Before a diagnosis of delusion of infestation can be made, other organic causes must be excluded, including withdrawal from such substances as cocaine, amphetamines, and alcohol.¹⁶ Patients with a delusion of infestation can have, and maintain, a symptomatic response with continuing use of an atypical antipsychotic agent, including risperidone and olanzapine.¹⁷

Evaluation and diagnostic work-up

A thorough medical history, review of systems, medication review, social history, and family history are important when evaluating a patient with chronic pruritus.¹⁸ These items can be valuable in formulating a differential diagnosis, even before a physical examination.

Physical examination. The physical exam should include detailed inspection of the entire skin and hair¹⁸; such a comprehensive physical exam can determine whether the source of the itch is cutaneous.⁷ This, in turn, can help further narrow the differential diagnosis. It is crucial that the physical exam include palpation of the liver, spleen, lymph nodes, and thyroid for organomegaly,⁸ which could indicate a serious systemic condition, such as lymphoma.

The ice-pack sign—in which an ice pack applied to the pruritic area provides immediate relief—is considered pathognomonic for brachioradial pruritus.

The ice-pack sign—in which an ice pack is applied to the pruritic area, the patient experiences immediate relief of pruritus, and the itch returns soon after the ice pack is removed—is considered pathognomonic for brachioradial pruritus.¹⁹

Continue to: Chronic pruritus with abnormal findings...

Chronic pruritus with abnormal findings on the physical exam should prompt an initial work-up.¹⁸ Also consider an initial work-up for a patient with chronic pruritus whose symptom has not been relieved with conservative treatment.¹⁸

Laboratory testing. The initial laboratory work-up could include any of the following evaluations: complete blood count, measurement of thyroid-stimulating hormone, comprehensive metabolic panel (liver function, renal function, and the serum glucose level) and the erythrocyte sedimentation rate (TABLE 2).¹⁸ If warranted by the evaluation and physical exam, blood work can also include serologic studies for human immunodeficiency virus infection and ­hepatitis.¹⁷

Imaging. Chest radiography should be performed if there is suspicion of malignancy, such as lymphoma.⁷ Although brachioradial pruritus and notalgia paresthetica have been postulated to be caused by impingement of spinal nerves, obtaining spinal imaging, such as magnetic resonance imaging, as part of the initial work-up is not recommended; because spinal images might not show evidence of spinal disease, obtaining spinal imaging is not a requirement before treating brachioradial pruritus and notalgia paresthetica. Do consider spinal imaging, however, for patients in whom brachioradial pruritus or notalgia paresthetica is suspected and conservative treatment has not produced a response.

Treatment: Nondrug approaches, topicals, systemic agents

Start conservatively. Treatment of pruritus should begin with behavior modification and nonpharmacotherapeutic options (TABLE 3⁸). Educate the patient that scratching might cause secondary skin lesions; empowering them with that knowledge is sometimes enough to help break the scratching cycling—especially if the patient combines behavior modification with proper skin hydration with an emollient. To prevent secondary skin lesions through involuntary scratching, consider recommending that lesions be covered with an occlusive dressing or protective clothing.¹³

Stress has been shown to make chronic itch worse; therefore, stress-reduction activities, such as exercise, meditation, and yoga, might be helpful.20 For patients in whom pruritus has a psychological component, referral to a psychiatrist or psychologist might be therapeutic.

Continue to: When a patient complains...

When a patient complains of severe pruritus at first presentation, consider pharmacotherapy in conjunction with nonpharmacotherapeutic options. Several of the more effective topical therapies for pruritus^a are listed in TABLE 4.²⁰ Well-known systemic agents for this purpose are reviewed below and listed in TABLE 5.⁷

Systemic treatment

Antihistamines. A staple in the treatment of pruritus for many years, antihistamines are not effective for all causes; however, they are effective in treating paraneoplastic pruritus.²⁰ First-generation antihistamines, with their sedating effect, can be useful for patients who experience generalized pruritus at night.²⁰

Anticonvulsants. Gabapentin and pregabalin are analogs of the neurotransmitter gamma-aminobutyric acid.²⁰ This drug class is helpful in neuropathic pruritus specifically caused by impingements, such as brachioradial pruritus and notalgia paresthetica.²⁰ In addition, of all systemic therapies used to treat uremic pruritus, gabapentin has, in clinical trials, most consistently been found effective for uremic pruritus.⁶ (Note: Use renal dosing of gabapentin in patients with renal failure.)

Antidepressants. Selective serotonin reuptake inhibitors (SSRIs; eg, fluvoxamine, paroxetine, and sertraline) might cause itch to subside by increasing the serotonin level, which, in turn, works to decrease inflammatory substances that cause itch.⁷ SSRIs have been used to treat patients with psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.⁷

Start conservatively: Use behavior modification and nonpharmacotherapeutic options for pruritus first.

Tricyclic antidepressants (eg, amitriptyline and doxepin) lessen the itch by antagonizing histamine receptors and through anticholinergic mechanisms. Tricyclics are best used in the treatment of psychogenic and nocturnal itch.⁷

Continue to: Mirtazapine...

Mirtazapine, a tetracyclic antidepressant, works in patients with uremic pruritus, psychogenic pruritus, cholestatic pruritus, and paraneoplastic pruritus.¹

Substance P antagonist. Aprepitant, a neurokinin receptor I antagonist, is a newer agent that inhibits binding of the itch mediator substance P to the neurokinin receptor. The drug has been found helpful in patients with drug-induced, paraneoplastic, and brachioradial pruritus.⁷

Opioid-receptor agents. Naltrexone, as a mu opioid-receptor antagonist, has shown promise as a treatment for uremic pruritus and cholestatic pruritus. Nalfurafine, a kappa opioid-receptor agonist, is emerging as a possible therapy for uremic pruritus.⁷

Bile-acid sequestrants. A few small studies have shown that treatment with a bile-acid sequestrant, such as cholestyramine and ursodiol, induces moderate improvement in symptoms in patients with cholestatic pruritus.²¹

CORRESPONDENCE
Matasha Russell, MD, Department of Family and Community Medicine, The University of Texas Health Science Center at Houston, McGovern Medical School, 6431 Fannin Street, JJL 324, Houston, TX 77030; [email protected].

Capillary malformation-arteriovenous malformation syndrome

Capillary Malformation-arteriovenous malformation syndrome (CM-AVM) is a rare vascular disorder characterized by the presence of capillary malformations with or without arteriovenous malformations, as well as arteriovenous fistulas (AVFs). CM-AVM is an autosomal dominant disorder.¹ CM-AVM type 1 is caused by mutations in the RASA1 gene, and CM-AVM type 2 is caused by mutations in the EPHB⁴ gene.² Approximately 70% of patients with RASA1-associated CM-AVM syndrome and 80% of patients with EPHB4-associated CM-AVM syndrome have an affected parent, while the remainder have de novo variants.¹

In patients with CM-AVM syndrome, CMs are often present at birth and more are typically acquired over time. CMs are characteristically 1-3 cm in diameter, round or oval, dull red or red-brown macules and patches with a blanched halo.³ Some CMs may be warm to touch indicating a possible underlying AVM or AVF.⁴ This can be confirmed by Doppler ultrasound, which would demonstrate increased arterial flow.⁴ CMs are most commonly located on the face and limbs and may present in isolation, but approximately one-third of patients have associated AVMs and AVFs.^1,5 These high-flow vascular malformations may be present in skin, muscle, bone, brain, and/or spine and may be asymptomatic or lead to serious sequelae, including bleeding, congestive heart failure, and neurologic complications, such as migraine headaches, seizures, or even stroke.⁵ Symptoms from intracranial and spinal high-flow lesions usually present in early childhood and affect approximately 7% of patients.³

The diagnosis of CM-AVM should be suspected in an individual with numerous characteristic CMs and may be supported by the presence of AVMs and AVFs, family history of CM-AVM, and/or identification of RASA1 or EPHB4 mutation by molecular genetic testing.^1,3 Although there are no consensus protocols for imaging CM-AVM patients, MRI of the brain and spine is recommended at diagnosis to identify underlying high-flow lesions.¹ This may allow for early treatment before the development of symptoms.¹ Any lesions identified on screening imaging may require regular surveillance, which is best determined by discussion with the radiologist.¹ Although there are no reports of patients with negative results on screening imaging who later develop AVMs or AVFs, there should be a low threshold for repeat imaging in patients who develop new symptoms or physical exam findings.^3,4

It has previously been suggested that the CMs in CM-AVM may actually represent early or small AVMs and pulsed-dye laser (PDL) treatment was not recommended because of concern for potential progression of lesions.⁴ However, a recent study demonstrated good response to PDL in patients with CM-AVM with no evidence of worsening or recurrence of lesions with long-term follow-up.⁶ Treatment of CMs that cause cosmetic concerns may be considered following discussion of risks and benefits with a dermatologist. Management of AVMs and AVFs requires a multidisciplinary team that, depending on location and symptoms of these features, may require the expertise of specialists such as neurosurgery, surgery, orthopedics, cardiology, and/or interventional radiology.¹

Given the suspicion for CM-AVM in our patient, further workup was completed. A skin biopsy was consistent with CM. Genetic testing with the Vascular Malformations Panel, Sequencing and Deletion/Duplication revealed a pathogenic variant in the RASA1 gene and a variant of unknown clinical significance in the TEK gene. Parental genetic testing for the RASA1 mutation was negative, supporting a de novo mutation in the patient. CNS imaging showed a small developmental venous malformation in the brain that neurosurgery did not think was clinically significant. At the most recent follow-up at age 8 years, our patient had developed a few new small CMs but was otherwise well.

Dr. Leszczynska is trained in pediatrics and is the current dermatology research fellow at the University of Texas at Austin. Ms. Croce is a dermatology-trained pediatric nurse practitioner and PhD student at the University of Texas at Austin School of Nursing. Dr. Diaz is chief of pediatric dermatology at Dell Children’s Medical Center, Austin, assistant professor of pediatrics and medicine (dermatology), and dermatology residency associate program director at University of Texas at Austin . The authors have no relevant conflicts of interest to disclose. Donna Bilu Martin, MD, is the editor of this column.


References

1. Bayrak-Toydemir P, Stevenson D. Capillary Malformation-Arteriovenous Malformation Syndrome. In: Adam MP, Ardinger HH, Pagon RA, et al., eds. GeneReviews®. Seattle: University of Washington, Seattle; February 22, 2011.

2.Yu J et al. Pediatr Dermatol. 2017 Sep;34(5):e227-30.

3. Orme CM et al. Pediatr Dermatol. 2013 Jul-Aug;30(4):409-15.

4. Weitz NA et al. Pediatr Dermatol. 2015 Jan-Feb;32(1):76-84.

5. Revencu N et al. Hum Mutat. 2013 Dec;34(12):1632-41.

6. Iznardo H et al. Pediatr Dermatol. 2020 Mar;37(2):342-44.
 

Capillary malformation-arteriovenous malformation syndrome

Capillary Malformation-arteriovenous malformation syndrome (CM-AVM) is a rare vascular disorder characterized by the presence of capillary malformations with or without arteriovenous malformations, as well as arteriovenous fistulas (AVFs). CM-AVM is an autosomal dominant disorder.¹ CM-AVM type 1 is caused by mutations in the RASA1 gene, and CM-AVM type 2 is caused by mutations in the EPHB⁴ gene.² Approximately 70% of patients with RASA1-associated CM-AVM syndrome and 80% of patients with EPHB4-associated CM-AVM syndrome have an affected parent, while the remainder have de novo variants.¹

In patients with CM-AVM syndrome, CMs are often present at birth and more are typically acquired over time. CMs are characteristically 1-3 cm in diameter, round or oval, dull red or red-brown macules and patches with a blanched halo.³ Some CMs may be warm to touch indicating a possible underlying AVM or AVF.⁴ This can be confirmed by Doppler ultrasound, which would demonstrate increased arterial flow.⁴ CMs are most commonly located on the face and limbs and may present in isolation, but approximately one-third of patients have associated AVMs and AVFs.^1,5 These high-flow vascular malformations may be present in skin, muscle, bone, brain, and/or spine and may be asymptomatic or lead to serious sequelae, including bleeding, congestive heart failure, and neurologic complications, such as migraine headaches, seizures, or even stroke.⁵ Symptoms from intracranial and spinal high-flow lesions usually present in early childhood and affect approximately 7% of patients.³

The diagnosis of CM-AVM should be suspected in an individual with numerous characteristic CMs and may be supported by the presence of AVMs and AVFs, family history of CM-AVM, and/or identification of RASA1 or EPHB4 mutation by molecular genetic testing.^1,3 Although there are no consensus protocols for imaging CM-AVM patients, MRI of the brain and spine is recommended at diagnosis to identify underlying high-flow lesions.¹ This may allow for early treatment before the development of symptoms.¹ Any lesions identified on screening imaging may require regular surveillance, which is best determined by discussion with the radiologist.¹ Although there are no reports of patients with negative results on screening imaging who later develop AVMs or AVFs, there should be a low threshold for repeat imaging in patients who develop new symptoms or physical exam findings.^3,4

It has previously been suggested that the CMs in CM-AVM may actually represent early or small AVMs and pulsed-dye laser (PDL) treatment was not recommended because of concern for potential progression of lesions.⁴ However, a recent study demonstrated good response to PDL in patients with CM-AVM with no evidence of worsening or recurrence of lesions with long-term follow-up.⁶ Treatment of CMs that cause cosmetic concerns may be considered following discussion of risks and benefits with a dermatologist. Management of AVMs and AVFs requires a multidisciplinary team that, depending on location and symptoms of these features, may require the expertise of specialists such as neurosurgery, surgery, orthopedics, cardiology, and/or interventional radiology.¹

Given the suspicion for CM-AVM in our patient, further workup was completed. A skin biopsy was consistent with CM. Genetic testing with the Vascular Malformations Panel, Sequencing and Deletion/Duplication revealed a pathogenic variant in the RASA1 gene and a variant of unknown clinical significance in the TEK gene. Parental genetic testing for the RASA1 mutation was negative, supporting a de novo mutation in the patient. CNS imaging showed a small developmental venous malformation in the brain that neurosurgery did not think was clinically significant. At the most recent follow-up at age 8 years, our patient had developed a few new small CMs but was otherwise well.

Dr. Leszczynska is trained in pediatrics and is the current dermatology research fellow at the University of Texas at Austin. Ms. Croce is a dermatology-trained pediatric nurse practitioner and PhD student at the University of Texas at Austin School of Nursing. Dr. Diaz is chief of pediatric dermatology at Dell Children’s Medical Center, Austin, assistant professor of pediatrics and medicine (dermatology), and dermatology residency associate program director at University of Texas at Austin . The authors have no relevant conflicts of interest to disclose. Donna Bilu Martin, MD, is the editor of this column.


References

1. Bayrak-Toydemir P, Stevenson D. Capillary Malformation-Arteriovenous Malformation Syndrome. In: Adam MP, Ardinger HH, Pagon RA, et al., eds. GeneReviews®. Seattle: University of Washington, Seattle; February 22, 2011.

2.Yu J et al. Pediatr Dermatol. 2017 Sep;34(5):e227-30.

3. Orme CM et al. Pediatr Dermatol. 2013 Jul-Aug;30(4):409-15.

4. Weitz NA et al. Pediatr Dermatol. 2015 Jan-Feb;32(1):76-84.

5. Revencu N et al. Hum Mutat. 2013 Dec;34(12):1632-41.

6. Iznardo H et al. Pediatr Dermatol. 2020 Mar;37(2):342-44.
 

Capillary malformation-arteriovenous malformation syndrome

Capillary Malformation-arteriovenous malformation syndrome (CM-AVM) is a rare vascular disorder characterized by the presence of capillary malformations with or without arteriovenous malformations, as well as arteriovenous fistulas (AVFs). CM-AVM is an autosomal dominant disorder.¹ CM-AVM type 1 is caused by mutations in the RASA1 gene, and CM-AVM type 2 is caused by mutations in the EPHB⁴ gene.² Approximately 70% of patients with RASA1-associated CM-AVM syndrome and 80% of patients with EPHB4-associated CM-AVM syndrome have an affected parent, while the remainder have de novo variants.¹

In patients with CM-AVM syndrome, CMs are often present at birth and more are typically acquired over time. CMs are characteristically 1-3 cm in diameter, round or oval, dull red or red-brown macules and patches with a blanched halo.³ Some CMs may be warm to touch indicating a possible underlying AVM or AVF.⁴ This can be confirmed by Doppler ultrasound, which would demonstrate increased arterial flow.⁴ CMs are most commonly located on the face and limbs and may present in isolation, but approximately one-third of patients have associated AVMs and AVFs.^1,5 These high-flow vascular malformations may be present in skin, muscle, bone, brain, and/or spine and may be asymptomatic or lead to serious sequelae, including bleeding, congestive heart failure, and neurologic complications, such as migraine headaches, seizures, or even stroke.⁵ Symptoms from intracranial and spinal high-flow lesions usually present in early childhood and affect approximately 7% of patients.³

The diagnosis of CM-AVM should be suspected in an individual with numerous characteristic CMs and may be supported by the presence of AVMs and AVFs, family history of CM-AVM, and/or identification of RASA1 or EPHB4 mutation by molecular genetic testing.^1,3 Although there are no consensus protocols for imaging CM-AVM patients, MRI of the brain and spine is recommended at diagnosis to identify underlying high-flow lesions.¹ This may allow for early treatment before the development of symptoms.¹ Any lesions identified on screening imaging may require regular surveillance, which is best determined by discussion with the radiologist.¹ Although there are no reports of patients with negative results on screening imaging who later develop AVMs or AVFs, there should be a low threshold for repeat imaging in patients who develop new symptoms or physical exam findings.^3,4

It has previously been suggested that the CMs in CM-AVM may actually represent early or small AVMs and pulsed-dye laser (PDL) treatment was not recommended because of concern for potential progression of lesions.⁴ However, a recent study demonstrated good response to PDL in patients with CM-AVM with no evidence of worsening or recurrence of lesions with long-term follow-up.⁶ Treatment of CMs that cause cosmetic concerns may be considered following discussion of risks and benefits with a dermatologist. Management of AVMs and AVFs requires a multidisciplinary team that, depending on location and symptoms of these features, may require the expertise of specialists such as neurosurgery, surgery, orthopedics, cardiology, and/or interventional radiology.¹

Given the suspicion for CM-AVM in our patient, further workup was completed. A skin biopsy was consistent with CM. Genetic testing with the Vascular Malformations Panel, Sequencing and Deletion/Duplication revealed a pathogenic variant in the RASA1 gene and a variant of unknown clinical significance in the TEK gene. Parental genetic testing for the RASA1 mutation was negative, supporting a de novo mutation in the patient. CNS imaging showed a small developmental venous malformation in the brain that neurosurgery did not think was clinically significant. At the most recent follow-up at age 8 years, our patient had developed a few new small CMs but was otherwise well.

Dr. Leszczynska is trained in pediatrics and is the current dermatology research fellow at the University of Texas at Austin. Ms. Croce is a dermatology-trained pediatric nurse practitioner and PhD student at the University of Texas at Austin School of Nursing. Dr. Diaz is chief of pediatric dermatology at Dell Children’s Medical Center, Austin, assistant professor of pediatrics and medicine (dermatology), and dermatology residency associate program director at University of Texas at Austin . The authors have no relevant conflicts of interest to disclose. Donna Bilu Martin, MD, is the editor of this column.


References

1. Bayrak-Toydemir P, Stevenson D. Capillary Malformation-Arteriovenous Malformation Syndrome. In: Adam MP, Ardinger HH, Pagon RA, et al., eds. GeneReviews®. Seattle: University of Washington, Seattle; February 22, 2011.

2.Yu J et al. Pediatr Dermatol. 2017 Sep;34(5):e227-30.

3. Orme CM et al. Pediatr Dermatol. 2013 Jul-Aug;30(4):409-15.

4. Weitz NA et al. Pediatr Dermatol. 2015 Jan-Feb;32(1):76-84.

5. Revencu N et al. Hum Mutat. 2013 Dec;34(12):1632-41.

6. Iznardo H et al. Pediatr Dermatol. 2020 Mar;37(2):342-44.
 

About 70% of patients on the oral selective Janus kinase 1 inhibitor abrocitinib for moderate to severe atopic dermatitis (AD) achieved high-efficacy responses without need for any supplemental topical therapies through 48 weeks of follow-up in the JADE EXTEND study, Kristian Reich, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

The head-turning outcomes achieved at the higher studied dose of 200 mg once daily as monotherapy – namely, 87% of patients had an EASI-75 response, defined as at least a 75% reduction from baseline in Eczema Area and Severity Index score, and 62% had an EASI-90 response – herald a new era in the management of atopic dermatitis, predicted Dr. Reich, of the Center for Translational Research in Inflammatory Skin Diseases at the University Medical Center Hamburg-Eppendorf (Germany).

“I think we will see an evolution in the treatment goals in atopic dermatitis. It’s really good to see nearly 90% of the patients achieved EASI-75 over time. I am completely convinced that if you ultimately want to have a happy patient, you will see treatment goals moving up. We have already seen this in psoriasis. I want to see drugs that give the majority of my patients an EASI-75. And ultimately I want to see EASI-90 for my patients,” he said.

Concurrent with his presentation at the EADV congress, Pfizer announced it has filed for marketing approval of abrocitinib at 100 mg and 200 mg once daily for the treatment of moderate to severe AD. The Food and Drug Administration has granted the application priority review status, with a decision due next April. The company has also filed for marketing approval with the European Medicines Agency.

The JADE EXTEND study is an ongoing extension of the previously reported phase 3, randomized, double-blind, placebo-controlled, 12-week JADE MONO-1 and JADE MONO-2 trials. The two trials included a total of 309 patients on abrocitinib at 200 mg/day and 314 on the selective Janus kinase (JAK) 1 inhibitor at 100 mg/day, 519 of whom subsequently entered the long-term extension study on their same dose. The 70% who required no supplemental topical therapy through 48 weeks were the focus of the analysis presented by Dr. Reich.

The proportion of strong responders increased up until the week 24 or 36 assessments, then remained steady until week 48. For example, the EASI-75 rate in patients on abrocitinib at 200 mg/day rose from 82.5% at week 16, to 86.2% at week 24, 90.1% at week 36, and reached 87.2% at week 48. The EASI-90 rates at the same time points were 56.7%, 64.5%, 65.5%, and 61.6%, respectively. And the EASI-100 rates were 24%, 31.6%, 29.6%, and 24%, respectively.

Not surprisingly, the EASI-75 rates in patients on abrocitinib at 100 mg/day were less robust: 64.4% at week 16, 75.5% at week 24, 74.5% at week 36, and 68% at week 48.

An Investigator’s Global Assessment score of 0 or 1 – that is, clear or almost clear – was achieved at week 16 in 55% of patients on 200 mg/day, 64.5% at week 24, 66% at week 36, and 60.5% at week 48. In patients on the 100-mg dose, the corresponding figures were 36.5%, 46.6%, 53.3%, and 45.2%.

A hallmark of all of the JAK inhibitors under study for AD is what Dr. Reich characterized as “an amazingly fast reduction of itch,” the dominant symptom of the disease. A clinically meaningful reduction of at least 4 points in the Peak Pruritus Numerical Rating Scale – a response of 4 or greater is considered clinically important – from the mean baseline score of 7.1 was present at week 12 in 56.3% of patients on abrocitinib at 200 mg, in 74.3% at week 16, and in 72.5% at week 48. The proportion of patients achieving this endpoint on 100 mg was 41.6% at week 12, 49.4% at week 16, and 52% at week 48.

Serious treatment-emergent adverse events occurred in 6.1% of JADE EXTEND participants on abrocitinib at 100 mg and 12.8% of those on 200 mg. These events included oral herpes and elevated creatine phosphokinase levels. The sole case of pulmonary embolism that occurred during the study was deemed unrelated to treatment.

“What this is telling me here is there are no signals that we haven’t seen earlier with this drug and with other JAK inhibitors before,” the dermatologist observed. “But I want to see more data. I want to see the overall safety, not just for a year, but for 2, 3, 4, and 5 years.”

Asked by an audience member if nonresponsiveness to one JAK inhibitor predicts nonresponse to others, Dr. Reich speculated that it’s likely to be so. He noted that all three of the JAK inhibitors furthest along in the developmental pipeline for atopic dermatitis – abrocitinib, baricitinib, and upadacitinib – are inhibitors of JAK 1, although baricitinib also targets JAK 2.

“I would think that if you really are a nonresponder to any of these that it will be hard to get a good response with the others. We’re not talking about antibodies here, where there may be different epitopes. The affinity is different, and we have seen that if you have no response to a weak TNF [tumor necrosis factor] inhibitor, you can still have a response to a strong TNF inhibitor. I don’t expect the same here,” according to Dr. Reich.

He reported serving as an adviser to and paid clinical research for Pfizer, which sponsored JADE EXTEND, as well as more than two dozen other pharmaceutical companies.

[email protected]

About 70% of patients on the oral selective Janus kinase 1 inhibitor abrocitinib for moderate to severe atopic dermatitis (AD) achieved high-efficacy responses without need for any supplemental topical therapies through 48 weeks of follow-up in the JADE EXTEND study, Kristian Reich, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

The head-turning outcomes achieved at the higher studied dose of 200 mg once daily as monotherapy – namely, 87% of patients had an EASI-75 response, defined as at least a 75% reduction from baseline in Eczema Area and Severity Index score, and 62% had an EASI-90 response – herald a new era in the management of atopic dermatitis, predicted Dr. Reich, of the Center for Translational Research in Inflammatory Skin Diseases at the University Medical Center Hamburg-Eppendorf (Germany).

“I think we will see an evolution in the treatment goals in atopic dermatitis. It’s really good to see nearly 90% of the patients achieved EASI-75 over time. I am completely convinced that if you ultimately want to have a happy patient, you will see treatment goals moving up. We have already seen this in psoriasis. I want to see drugs that give the majority of my patients an EASI-75. And ultimately I want to see EASI-90 for my patients,” he said.

Concurrent with his presentation at the EADV congress, Pfizer announced it has filed for marketing approval of abrocitinib at 100 mg and 200 mg once daily for the treatment of moderate to severe AD. The Food and Drug Administration has granted the application priority review status, with a decision due next April. The company has also filed for marketing approval with the European Medicines Agency.

The JADE EXTEND study is an ongoing extension of the previously reported phase 3, randomized, double-blind, placebo-controlled, 12-week JADE MONO-1 and JADE MONO-2 trials. The two trials included a total of 309 patients on abrocitinib at 200 mg/day and 314 on the selective Janus kinase (JAK) 1 inhibitor at 100 mg/day, 519 of whom subsequently entered the long-term extension study on their same dose. The 70% who required no supplemental topical therapy through 48 weeks were the focus of the analysis presented by Dr. Reich.

The proportion of strong responders increased up until the week 24 or 36 assessments, then remained steady until week 48. For example, the EASI-75 rate in patients on abrocitinib at 200 mg/day rose from 82.5% at week 16, to 86.2% at week 24, 90.1% at week 36, and reached 87.2% at week 48. The EASI-90 rates at the same time points were 56.7%, 64.5%, 65.5%, and 61.6%, respectively. And the EASI-100 rates were 24%, 31.6%, 29.6%, and 24%, respectively.

Not surprisingly, the EASI-75 rates in patients on abrocitinib at 100 mg/day were less robust: 64.4% at week 16, 75.5% at week 24, 74.5% at week 36, and 68% at week 48.

An Investigator’s Global Assessment score of 0 or 1 – that is, clear or almost clear – was achieved at week 16 in 55% of patients on 200 mg/day, 64.5% at week 24, 66% at week 36, and 60.5% at week 48. In patients on the 100-mg dose, the corresponding figures were 36.5%, 46.6%, 53.3%, and 45.2%.

A hallmark of all of the JAK inhibitors under study for AD is what Dr. Reich characterized as “an amazingly fast reduction of itch,” the dominant symptom of the disease. A clinically meaningful reduction of at least 4 points in the Peak Pruritus Numerical Rating Scale – a response of 4 or greater is considered clinically important – from the mean baseline score of 7.1 was present at week 12 in 56.3% of patients on abrocitinib at 200 mg, in 74.3% at week 16, and in 72.5% at week 48. The proportion of patients achieving this endpoint on 100 mg was 41.6% at week 12, 49.4% at week 16, and 52% at week 48.

Serious treatment-emergent adverse events occurred in 6.1% of JADE EXTEND participants on abrocitinib at 100 mg and 12.8% of those on 200 mg. These events included oral herpes and elevated creatine phosphokinase levels. The sole case of pulmonary embolism that occurred during the study was deemed unrelated to treatment.

“What this is telling me here is there are no signals that we haven’t seen earlier with this drug and with other JAK inhibitors before,” the dermatologist observed. “But I want to see more data. I want to see the overall safety, not just for a year, but for 2, 3, 4, and 5 years.”

Asked by an audience member if nonresponsiveness to one JAK inhibitor predicts nonresponse to others, Dr. Reich speculated that it’s likely to be so. He noted that all three of the JAK inhibitors furthest along in the developmental pipeline for atopic dermatitis – abrocitinib, baricitinib, and upadacitinib – are inhibitors of JAK 1, although baricitinib also targets JAK 2.

“I would think that if you really are a nonresponder to any of these that it will be hard to get a good response with the others. We’re not talking about antibodies here, where there may be different epitopes. The affinity is different, and we have seen that if you have no response to a weak TNF [tumor necrosis factor] inhibitor, you can still have a response to a strong TNF inhibitor. I don’t expect the same here,” according to Dr. Reich.

He reported serving as an adviser to and paid clinical research for Pfizer, which sponsored JADE EXTEND, as well as more than two dozen other pharmaceutical companies.

[email protected]

About 70% of patients on the oral selective Janus kinase 1 inhibitor abrocitinib for moderate to severe atopic dermatitis (AD) achieved high-efficacy responses without need for any supplemental topical therapies through 48 weeks of follow-up in the JADE EXTEND study, Kristian Reich, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

The head-turning outcomes achieved at the higher studied dose of 200 mg once daily as monotherapy – namely, 87% of patients had an EASI-75 response, defined as at least a 75% reduction from baseline in Eczema Area and Severity Index score, and 62% had an EASI-90 response – herald a new era in the management of atopic dermatitis, predicted Dr. Reich, of the Center for Translational Research in Inflammatory Skin Diseases at the University Medical Center Hamburg-Eppendorf (Germany).

“I think we will see an evolution in the treatment goals in atopic dermatitis. It’s really good to see nearly 90% of the patients achieved EASI-75 over time. I am completely convinced that if you ultimately want to have a happy patient, you will see treatment goals moving up. We have already seen this in psoriasis. I want to see drugs that give the majority of my patients an EASI-75. And ultimately I want to see EASI-90 for my patients,” he said.

Concurrent with his presentation at the EADV congress, Pfizer announced it has filed for marketing approval of abrocitinib at 100 mg and 200 mg once daily for the treatment of moderate to severe AD. The Food and Drug Administration has granted the application priority review status, with a decision due next April. The company has also filed for marketing approval with the European Medicines Agency.

The JADE EXTEND study is an ongoing extension of the previously reported phase 3, randomized, double-blind, placebo-controlled, 12-week JADE MONO-1 and JADE MONO-2 trials. The two trials included a total of 309 patients on abrocitinib at 200 mg/day and 314 on the selective Janus kinase (JAK) 1 inhibitor at 100 mg/day, 519 of whom subsequently entered the long-term extension study on their same dose. The 70% who required no supplemental topical therapy through 48 weeks were the focus of the analysis presented by Dr. Reich.

The proportion of strong responders increased up until the week 24 or 36 assessments, then remained steady until week 48. For example, the EASI-75 rate in patients on abrocitinib at 200 mg/day rose from 82.5% at week 16, to 86.2% at week 24, 90.1% at week 36, and reached 87.2% at week 48. The EASI-90 rates at the same time points were 56.7%, 64.5%, 65.5%, and 61.6%, respectively. And the EASI-100 rates were 24%, 31.6%, 29.6%, and 24%, respectively.

Not surprisingly, the EASI-75 rates in patients on abrocitinib at 100 mg/day were less robust: 64.4% at week 16, 75.5% at week 24, 74.5% at week 36, and 68% at week 48.

An Investigator’s Global Assessment score of 0 or 1 – that is, clear or almost clear – was achieved at week 16 in 55% of patients on 200 mg/day, 64.5% at week 24, 66% at week 36, and 60.5% at week 48. In patients on the 100-mg dose, the corresponding figures were 36.5%, 46.6%, 53.3%, and 45.2%.

A hallmark of all of the JAK inhibitors under study for AD is what Dr. Reich characterized as “an amazingly fast reduction of itch,” the dominant symptom of the disease. A clinically meaningful reduction of at least 4 points in the Peak Pruritus Numerical Rating Scale – a response of 4 or greater is considered clinically important – from the mean baseline score of 7.1 was present at week 12 in 56.3% of patients on abrocitinib at 200 mg, in 74.3% at week 16, and in 72.5% at week 48. The proportion of patients achieving this endpoint on 100 mg was 41.6% at week 12, 49.4% at week 16, and 52% at week 48.

Serious treatment-emergent adverse events occurred in 6.1% of JADE EXTEND participants on abrocitinib at 100 mg and 12.8% of those on 200 mg. These events included oral herpes and elevated creatine phosphokinase levels. The sole case of pulmonary embolism that occurred during the study was deemed unrelated to treatment.

“What this is telling me here is there are no signals that we haven’t seen earlier with this drug and with other JAK inhibitors before,” the dermatologist observed. “But I want to see more data. I want to see the overall safety, not just for a year, but for 2, 3, 4, and 5 years.”

Asked by an audience member if nonresponsiveness to one JAK inhibitor predicts nonresponse to others, Dr. Reich speculated that it’s likely to be so. He noted that all three of the JAK inhibitors furthest along in the developmental pipeline for atopic dermatitis – abrocitinib, baricitinib, and upadacitinib – are inhibitors of JAK 1, although baricitinib also targets JAK 2.

“I would think that if you really are a nonresponder to any of these that it will be hard to get a good response with the others. We’re not talking about antibodies here, where there may be different epitopes. The affinity is different, and we have seen that if you have no response to a weak TNF [tumor necrosis factor] inhibitor, you can still have a response to a strong TNF inhibitor. I don’t expect the same here,” according to Dr. Reich.

He reported serving as an adviser to and paid clinical research for Pfizer, which sponsored JADE EXTEND, as well as more than two dozen other pharmaceutical companies.

[email protected]

Tapinarof cream 1% applied once daily in patients with plaque psoriasis convincingly hit its primary and secondary endpoints and was well tolerated in two identical pivotal phase 3, randomized trials, Mark G. Lebwohl, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

“Tapinarof cream has the potential to be a first-in-class topical therapeutic aryl hydrocarbon receptor modulating agent and will provide physicians and patients with a novel nonsteroidal topical treatment option that’s effective and well tolerated,” predicted Dr. Lebwohl, professor and chair of the department of dermatology at the Icahn School of Medicine at Mount Sinai, New York.

Dermavant Sciences, the company developing topical tapinarof for treatment of atopic dermatitis as well as psoriasis, announced that upon completion of an ongoing long-term extension study the company plans to file for approval of the drug for psoriasis in 2021.

The two pivotal phase 3 trials, PSOARING 1 and PSOARING 2, randomized a total of 1,025 patients with plaque psoriasis to once-daily tapinarof cream 1% or its vehicle. “This was a fairly difficult group of patients,” Dr. Lebwohl said. Roughly 80% had moderate psoriasis as defined by a baseline Physician Global Assessment (PGA) score of 3, with the remainder split evenly between mild and severe disease. Participants averaged 8% body surface area involvement. Body mass index was on average greater than 31 kg/m².

The primary efficacy endpoint was a PGA score of 0 or 1 – that is, clear or almost clear – plus at least a 2-grade improvement in PGA from baseline at week 12. This was achieved in 35.4% of patients on tapinarof cream once daily in PSOARING 1 and 40.2% in PSOARING 2, compared with 6.0% and 6.3% of vehicle-treated controls, a highly significant difference (both P < .0001).

The prespecified secondary endpoint was a 75% improvement in Psoriasis Area and Severity Index (PASI) score from baseline to week 12. The PASI 75 rates were 36.1% and 47.6% with tapinarof, significantly better than the 10.2% and 6.9% rates in controls.

The most common adverse event associated with tapinarof was folliculitis, which occurred in 20.6% of treated patients in PSOARING 1 and in 15.7% in PSOARING 2. More than 98% of cases were mild or moderate. The folliculitis led to study discontinuation in only 1.8% and 0.9% of subjects in the two trials.

The other noteworthy adverse event was contact dermatitis. It occurred in 3.8% and 4.7% of tapinarof-treated patients, again with low study discontinuation rates of 1.5% and 2.2%.

During the audience discussion, Linda Stein Gold, MD, lead investigator for PSOARING 2, was asked about this folliculitis. She said the mechanism is unclear, as is the best management. She encountered it in patients, didn’t treat it, and it went away on its own. It’s not a bacterial folliculitis; when cultured it invariably proved culture negative, she noted.

The comparative efficacy of tapinarof cream versus the potent and superpotent topical corticosteroids commonly used in the treatment of psoriasis hasn’t been evaluated in head-to-head studies. Her experience and that of the other investigators has been that tapinarof’s efficacy is comparably strong, “but we don’t have the steroid side effects,” said Dr. Stein Gold, director of dermatology clinical research at Henry Ford Health System in Detroit.

In an interview, Dr. Lebwohl said tapinarof, if approved, could help meet a major unmet need for new and better topical therapies for psoriasis.

“You keep hearing about all these biologic agents and small-molecule pills coming out, but the majority of patients still only need topical therapy,” he observed.

Moreover, even when patients with more severe disease achieve a PASI 75 or PASI 90 response with systemic therapy, they usually still need supplemental topical therapy to get them closer to the goal of clear skin.

The superpotent steroids that are the current mainstay of topical therapy come with predictable side effects that dictate a 2- to 4-week limit on their approved use. Also, they’re not supposed to be applied to the face or to intertriginous sites, including the groin, axillae, and under the breasts. In contrast, tapinarof has proved safe and effective in these sensitive areas.

Asked to predict how tapinarof is likely to be used in clinical practice, Dr. Lebwohl replied: “The efficacy was equivalent to strong topical steroids, so I think it could be used first line in place of topical steroids. And in particular, in patients with psoriasis at facial and intertriginous sites, I think an argument can be made for insisting that it be first line.”

He also expects that physicians will end up utilizing tapinarof for a varied group of steroid-responsive dermatoses beyond psoriasis and atopic dermatitis.

“It clearly reduces inflammation, which is why I would expect it would work well for those,” the dermatologist said.

The mechanism of action of tapinarof has been worked out. The drug enters the cell and binds to the aryl hydrocarbon receptor, forming a complex that enters the nucleus. There it joins with the aryl hydrocarbon receptor nuclear translocator, which regulates gene expression so as to reduce production of inflammatory cytokines while promoting an increase in skin barrier proteins, which is why tapinarof is also being developed as an atopic dermatitis therapy.

Dr. Lebwohl and Dr. Stein Gold reported receiving research funds from and serving as consultants to Dermavant Sciences as well as numerous other pharmaceutical companies.

[email protected]

Tapinarof cream 1% applied once daily in patients with plaque psoriasis convincingly hit its primary and secondary endpoints and was well tolerated in two identical pivotal phase 3, randomized trials, Mark G. Lebwohl, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

“Tapinarof cream has the potential to be a first-in-class topical therapeutic aryl hydrocarbon receptor modulating agent and will provide physicians and patients with a novel nonsteroidal topical treatment option that’s effective and well tolerated,” predicted Dr. Lebwohl, professor and chair of the department of dermatology at the Icahn School of Medicine at Mount Sinai, New York.

Dermavant Sciences, the company developing topical tapinarof for treatment of atopic dermatitis as well as psoriasis, announced that upon completion of an ongoing long-term extension study the company plans to file for approval of the drug for psoriasis in 2021.

The two pivotal phase 3 trials, PSOARING 1 and PSOARING 2, randomized a total of 1,025 patients with plaque psoriasis to once-daily tapinarof cream 1% or its vehicle. “This was a fairly difficult group of patients,” Dr. Lebwohl said. Roughly 80% had moderate psoriasis as defined by a baseline Physician Global Assessment (PGA) score of 3, with the remainder split evenly between mild and severe disease. Participants averaged 8% body surface area involvement. Body mass index was on average greater than 31 kg/m².

The primary efficacy endpoint was a PGA score of 0 or 1 – that is, clear or almost clear – plus at least a 2-grade improvement in PGA from baseline at week 12. This was achieved in 35.4% of patients on tapinarof cream once daily in PSOARING 1 and 40.2% in PSOARING 2, compared with 6.0% and 6.3% of vehicle-treated controls, a highly significant difference (both P < .0001).

The prespecified secondary endpoint was a 75% improvement in Psoriasis Area and Severity Index (PASI) score from baseline to week 12. The PASI 75 rates were 36.1% and 47.6% with tapinarof, significantly better than the 10.2% and 6.9% rates in controls.

The most common adverse event associated with tapinarof was folliculitis, which occurred in 20.6% of treated patients in PSOARING 1 and in 15.7% in PSOARING 2. More than 98% of cases were mild or moderate. The folliculitis led to study discontinuation in only 1.8% and 0.9% of subjects in the two trials.

The other noteworthy adverse event was contact dermatitis. It occurred in 3.8% and 4.7% of tapinarof-treated patients, again with low study discontinuation rates of 1.5% and 2.2%.

During the audience discussion, Linda Stein Gold, MD, lead investigator for PSOARING 2, was asked about this folliculitis. She said the mechanism is unclear, as is the best management. She encountered it in patients, didn’t treat it, and it went away on its own. It’s not a bacterial folliculitis; when cultured it invariably proved culture negative, she noted.

The comparative efficacy of tapinarof cream versus the potent and superpotent topical corticosteroids commonly used in the treatment of psoriasis hasn’t been evaluated in head-to-head studies. Her experience and that of the other investigators has been that tapinarof’s efficacy is comparably strong, “but we don’t have the steroid side effects,” said Dr. Stein Gold, director of dermatology clinical research at Henry Ford Health System in Detroit.

In an interview, Dr. Lebwohl said tapinarof, if approved, could help meet a major unmet need for new and better topical therapies for psoriasis.

“You keep hearing about all these biologic agents and small-molecule pills coming out, but the majority of patients still only need topical therapy,” he observed.

Moreover, even when patients with more severe disease achieve a PASI 75 or PASI 90 response with systemic therapy, they usually still need supplemental topical therapy to get them closer to the goal of clear skin.

The superpotent steroids that are the current mainstay of topical therapy come with predictable side effects that dictate a 2- to 4-week limit on their approved use. Also, they’re not supposed to be applied to the face or to intertriginous sites, including the groin, axillae, and under the breasts. In contrast, tapinarof has proved safe and effective in these sensitive areas.

Asked to predict how tapinarof is likely to be used in clinical practice, Dr. Lebwohl replied: “The efficacy was equivalent to strong topical steroids, so I think it could be used first line in place of topical steroids. And in particular, in patients with psoriasis at facial and intertriginous sites, I think an argument can be made for insisting that it be first line.”

He also expects that physicians will end up utilizing tapinarof for a varied group of steroid-responsive dermatoses beyond psoriasis and atopic dermatitis.

“It clearly reduces inflammation, which is why I would expect it would work well for those,” the dermatologist said.

The mechanism of action of tapinarof has been worked out. The drug enters the cell and binds to the aryl hydrocarbon receptor, forming a complex that enters the nucleus. There it joins with the aryl hydrocarbon receptor nuclear translocator, which regulates gene expression so as to reduce production of inflammatory cytokines while promoting an increase in skin barrier proteins, which is why tapinarof is also being developed as an atopic dermatitis therapy.

Dr. Lebwohl and Dr. Stein Gold reported receiving research funds from and serving as consultants to Dermavant Sciences as well as numerous other pharmaceutical companies.

[email protected]

Tapinarof cream 1% applied once daily in patients with plaque psoriasis convincingly hit its primary and secondary endpoints and was well tolerated in two identical pivotal phase 3, randomized trials, Mark G. Lebwohl, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

“Tapinarof cream has the potential to be a first-in-class topical therapeutic aryl hydrocarbon receptor modulating agent and will provide physicians and patients with a novel nonsteroidal topical treatment option that’s effective and well tolerated,” predicted Dr. Lebwohl, professor and chair of the department of dermatology at the Icahn School of Medicine at Mount Sinai, New York.

Dermavant Sciences, the company developing topical tapinarof for treatment of atopic dermatitis as well as psoriasis, announced that upon completion of an ongoing long-term extension study the company plans to file for approval of the drug for psoriasis in 2021.

The two pivotal phase 3 trials, PSOARING 1 and PSOARING 2, randomized a total of 1,025 patients with plaque psoriasis to once-daily tapinarof cream 1% or its vehicle. “This was a fairly difficult group of patients,” Dr. Lebwohl said. Roughly 80% had moderate psoriasis as defined by a baseline Physician Global Assessment (PGA) score of 3, with the remainder split evenly between mild and severe disease. Participants averaged 8% body surface area involvement. Body mass index was on average greater than 31 kg/m².

The primary efficacy endpoint was a PGA score of 0 or 1 – that is, clear or almost clear – plus at least a 2-grade improvement in PGA from baseline at week 12. This was achieved in 35.4% of patients on tapinarof cream once daily in PSOARING 1 and 40.2% in PSOARING 2, compared with 6.0% and 6.3% of vehicle-treated controls, a highly significant difference (both P < .0001).

The prespecified secondary endpoint was a 75% improvement in Psoriasis Area and Severity Index (PASI) score from baseline to week 12. The PASI 75 rates were 36.1% and 47.6% with tapinarof, significantly better than the 10.2% and 6.9% rates in controls.

The most common adverse event associated with tapinarof was folliculitis, which occurred in 20.6% of treated patients in PSOARING 1 and in 15.7% in PSOARING 2. More than 98% of cases were mild or moderate. The folliculitis led to study discontinuation in only 1.8% and 0.9% of subjects in the two trials.

The other noteworthy adverse event was contact dermatitis. It occurred in 3.8% and 4.7% of tapinarof-treated patients, again with low study discontinuation rates of 1.5% and 2.2%.

During the audience discussion, Linda Stein Gold, MD, lead investigator for PSOARING 2, was asked about this folliculitis. She said the mechanism is unclear, as is the best management. She encountered it in patients, didn’t treat it, and it went away on its own. It’s not a bacterial folliculitis; when cultured it invariably proved culture negative, she noted.

The comparative efficacy of tapinarof cream versus the potent and superpotent topical corticosteroids commonly used in the treatment of psoriasis hasn’t been evaluated in head-to-head studies. Her experience and that of the other investigators has been that tapinarof’s efficacy is comparably strong, “but we don’t have the steroid side effects,” said Dr. Stein Gold, director of dermatology clinical research at Henry Ford Health System in Detroit.

In an interview, Dr. Lebwohl said tapinarof, if approved, could help meet a major unmet need for new and better topical therapies for psoriasis.

“You keep hearing about all these biologic agents and small-molecule pills coming out, but the majority of patients still only need topical therapy,” he observed.

Moreover, even when patients with more severe disease achieve a PASI 75 or PASI 90 response with systemic therapy, they usually still need supplemental topical therapy to get them closer to the goal of clear skin.

The superpotent steroids that are the current mainstay of topical therapy come with predictable side effects that dictate a 2- to 4-week limit on their approved use. Also, they’re not supposed to be applied to the face or to intertriginous sites, including the groin, axillae, and under the breasts. In contrast, tapinarof has proved safe and effective in these sensitive areas.

Asked to predict how tapinarof is likely to be used in clinical practice, Dr. Lebwohl replied: “The efficacy was equivalent to strong topical steroids, so I think it could be used first line in place of topical steroids. And in particular, in patients with psoriasis at facial and intertriginous sites, I think an argument can be made for insisting that it be first line.”

He also expects that physicians will end up utilizing tapinarof for a varied group of steroid-responsive dermatoses beyond psoriasis and atopic dermatitis.

“It clearly reduces inflammation, which is why I would expect it would work well for those,” the dermatologist said.

The mechanism of action of tapinarof has been worked out. The drug enters the cell and binds to the aryl hydrocarbon receptor, forming a complex that enters the nucleus. There it joins with the aryl hydrocarbon receptor nuclear translocator, which regulates gene expression so as to reduce production of inflammatory cytokines while promoting an increase in skin barrier proteins, which is why tapinarof is also being developed as an atopic dermatitis therapy.

Dr. Lebwohl and Dr. Stein Gold reported receiving research funds from and serving as consultants to Dermavant Sciences as well as numerous other pharmaceutical companies.

[email protected]

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

[email protected]

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

[email protected]

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

[email protected]