Development of SkinTracker, an integrated dermatology mobile app and web portal enabling remote clinical research studies.

Introduction: In-person dermatology clinical research studies often face recruitment and participation challenges due to travel-, time-, and cost-associated barriers. Studies incorporating virtual/asynchronous formats can potentially enhance research subject participation and satisfaction, but few mobile health tools are available to enable remote study conduct. We developed SkinTracker, a patient-facing mobile app and researcher-facing web platform, that enables longitudinal collection of skin photos, patient reported outcomes, and biometric health and environmental data. Methods: Eight design thinking sessions including dermatologists, clinical research staff, software engineers, and graphic designers were held to create the components of SkinTracker. Following iterative prototyping, SkinTracker was piloted across six adult and four pediatric subjects with atopic dermatitis (AD) of varying severity levels to test and provide feedback on SkinTracker for six months. Results: The SkinTracker app enables collection of informed consent for study participation, baseline medical history, standardized skin photographs, patient-reported outcomes (e.g., Patient Oriented Eczema Measure (POEM), Pruritus Numerical Rating Scale (NRS), Dermatology Life Quality Index (DLQI)), medication use, adverse events, voice diary to document qualitative experiences, chat function for communication with research team, environmental and biometric data such as exercise and sleep metrics through integration with an Apple Watch. The researcher web portal allows for management and visualization of subject enrollment, skin photographs for examination and severity scoring, survey completion, and other patient modules. The pilot study requested that subjects complete surveys and photographs on a weekly to monthly basis via the SkinTracker app. Afterwards, participants rated their experience in a 7-item user experience survey covering app function, design, and desire for participation in future studies using SkinTracker. Almost all subjects agreed or strongly agreed that SkinTracker enabled more convenient participation in skin research studies compared to an in-person format. Discussion: To our knowledge, SkinTracker is one of the first integrated app- and web-based platforms allowing collection and management of data commonly obtained in clinical research studies. SkinTracker enables detailed, frequent capture of data that may better reflect the fluctuating course of conditions such as AD, and can be modularly customized for different skin conditions to improve dermatologic research participation and patient access.

Reactive infectious mucocutaneous eruption following COVID-19 in an adolescent boy: Case report and review of the literature.

Reactive infectious mucocutaneous eruption (RIME) is a mucosal-predominant eruption that usually affects two or more mucosal sites. We present a case of RIME secondary to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and provide a brief review of the literature with a focus on the natural history and response to treatment. This entity may require inpatient management and systemic corticosteroids for symptom control in the pediatric population.

Transcriptomic Profiling of Plaque Psoriasis and Cutaneous T-Cell Subsets during Treatment with Secukinumab.

The IL-17A inhibitor secukinumab is efficacious for the treatment of psoriasis. To better understand its mechanism of action, we investigated its impact on psoriatic lesions from 15 patients with moderate-to-severe plaque psoriasis undergoing secukinumab treatment. We characterized the longitudinal transcriptomic changes of whole lesional skin tissue as well as cutaneous CD4+ and CD8+ T effector cells and CD4+ T regulatory cells across 12 weeks of treatment. Secukinumab was clinically effective and reduced disease-associated overexpression of IL17A , IL17F, IL23A, IL23R, and IFNG in whole tissue as soon as 2 weeks after initiation of treatment. IL17A overexpression in T-cell subsets, primarily CD8+ T cells, was also reduced. Although secukinumab treatment resolved 89‒97% of psoriasis-associated expression differences in bulk tissue and T-cell subsets by week 12 of treatment, we observed expression differences involved in IFN signaling and metallothionein synthesis that remained unresolved at this time point as well as potential treatment-associated expression differences involved in IL-15 signaling. These changes were accompanied by shifts in broader immune cell composition on the basis of deconvolution of RNA-sequencing data. In conclusion, our study reveals several phenotypic and cellular changes within the lesion that underlie clinical improvement from secukinumab.

Verrucous Melanoma Presenting as a Cutaneous Horn.

ABSTRACT: Verrucous malignant melanoma (MM) is a rare variant of melanoma that often presents diagnostic challenges. This case highlights the unique presentation of verrucous MM underlying a cutaneous horn. It is vital for dermatologists to be aware of this potentially benign-appearing variant to be able to diagnose and treat MM early on.

Management strategies for borderline and narcissistic personality disorders in dermatology practice: a review.

Dermatologists are often ill-equipped to promptly identify and manage patients with personality disorders. Patients with borderline personality disorder (BPD) and narcissistic personality disorder (NPD) frequently present to dermatology clinics, particularly those that provide esthetic services. Although dermatologists should ideally utilize specific management strategies when working with these patients, there is a lack of awareness and availability of resources on how to do so. Here, we review the psychiatry, plastic and reconstructive surgery, and dermatology literature to provide recommendations on tangible management strategies for dermatologists to avoid common mistakes that are made while managing patients with BPD and NPD. Additionally, we also discuss common dermatologic manifestations of BPD and NPD to improve providers' ability to identify patients with these conditions in their practices.

Optimizing doxepin therapy in dermatology: introducing blood level monitoring and genotype testing.

Doxepin, a tricyclic antidepressant, is the most efficacious antipruritic available to dermatologists; however its use is often suboptimal because of significant interindividual variability in doxepin plasma levels and clinical response between patients taking the same dose. As result, the Food and Drug Administration approves a maximum dose of 300 mg of doxepin per day and a 10 mg per cc liquid doxepin concentrate. These allow patients to significantly increase or decrease their dose, due to either a lack of clinical efficacy or side effects at typical dermatologic doses (often 10-25 mg per day). This review initially discusses the unique advantages of doxepin in dermatology. Then, it explores internal and external reasons why doxepin plasma levels and clinical response vary so significantly between patients, including genetic polymorphisms, drug interactions, comorbidities, sex, and ethnicity. Blood level monitoring is introduced, a tool dermatologists can use to optimize doxepin dosing in patients responding subtherapeutically to typical dermatologic doses. Without blood level monitoring, patients initially unresponsive to treatment could be labeled treatment failures when in fact they may be cases of inadequate dosing. Blood level monitoring allows for safe dose adjustments in these individuals to maximize patients' chances of achieving therapeutic success with this agent.

Dupilumab-Induced Facial Flushing After Alcohol Consumption.

Dupilumab is a biologic agent approved by the US Food and Drug Administration for the treatment of atopic dermatitis (AD). Here, we report 2 patients with AD who were treated with dupilumab and subsequently developed facial flushing after consuming alcohol. A possible mechanism of action for this side effect is discussed along with a potential role of dupilumab.

The use of Goeckerman therapy in managing erythrodermic psoriasis resistant to multiple medications.

Erythrodermic psoriasis is a relatively rare, more dangerous inflammatory variant of psoriasis associated with high morbidity and mortality. It can be exceptionally challenging to manage, defeating even the most experienced dermatologist's arsenal of treatment strategies. Goeckerman therapy, a regimen of ultraviolet B phototherapy and crude coal tar, has demonstrable efficacy in severe and recalcitrant plaque-type psoriasis. However, its utility in erythrodermic psoriasis has not been explored within the dermatology literature. Herein, we present a patient with a long-standing history of erythrodermic psoriasis refractory to eleven treatment modalities including four biologic agents, who had his erythroderma 'turned around' following Goeckerman therapy. 'Turned around' is used to describe dramatically reducing a patient's cutaneous inflammation so that previously recalcitrant disease can now respond to maintenance therapy. The importance of a one to three week 'cool down' period of topical corticosteroid therapy prior to phototherapy or crude coal tar use is highlighted in this case as well. Although Goeckerman therapy is no longer regularly used, it remains one of the most efficacious treatments available for intractable psoriasis, attracting patients from all over the country desperate for symptom relief. This case suggests it may be useful in 'turning around' extremely difficult-to-treat erythrodermic psoriasis as well.

Prescribing Isotretinoin for Transgender Patients: A Call to Action and Recommendations.

Case Scenerio: A 26-year-old patient presents to the dermatology clinic with severe nodulocystic scarring acne. The patient identifies as a transgender male and notes that he has been receiving hormone replacement therapy for the past 4 years with weekly intramuscular testosterone injections.

Biologic Treatment of 4 HIV-Positive Patients: A Case Series and Literature Review.

The management of psoriatic disease in human immunodeficiency virus (HIV)-positive patients is challenging. Psoriasis in HIV-positive patients is often severe, progressive, and resistant to first- and second-line therapies, including topical treatments, phototherapy, highly active antiretroviral therapy (HAART), and oral retinoids. Other systemic agents used to treat psoriasis, such as methotrexate and cyclosporine, are immunosuppressants and thus many dermatologists may not feel comfortable prescribing them to HIV-positive patients who are already immunocompromised. Biologic agents, which target specific aspects of overactive immune pathways in psoriasis, have revolutionized the management of moderate-to-severe psoriasis. However, data is limited regarding their safety and efficacy in HIV-positive patients. OBJECTIVE: Report four cases of HIV-positive patients managed on biologic therapy and summarize the cases of psoriasis in HIV-positive patients managed on biologic therapy that have been published in dermatologic literature to date. METHODS: We searched PubMed and Embase databases using the terms HIV and psoriasis or HIV and psoriatic arthritis combined with one of the eleven biologics currently approved for treating psoriasis. RESULTS: We identified 48 cases of anti-psoriasis biologic therapy (including adalimumab, infliximab, etanercept, ustekinumab, and guselkumab) in HIV-positive patients and added four. While data is limited, the evidence available suggests biologic agents are safe and efficacious in moderate-to-severe psoriasis and may even have a favorable effect on CD4 and HIV viral counts when used with concomitant HAART. CONCLUSION: Further research would be helpful to establish practical guidelines for the use of anti-psoriasis biologic therapy in the HIV population, including that of newer agents.

Evaluation of a Genetic Risk Score for Diagnosis of Psoriatic Arthritis.

BACKGROUND: Diagnosis of psoriatic arthritis (PsA) can be challenging, resulting in delays that contribute to irreversible joint damage, reduced quality of life, and increased mortality. OBJECTIVE: Use genetic markers to develop and evaluate a PsA genetic risk score (GRS) for its ability to discriminate between psoriasis (PsO) only and PsO with PsA among a psoriatic cohort with full genome-wide genotype data. METHODS: Genome-wide single-nucleotide polymorphism genotyping was performed on 724 psoriatic patients. A set of 11 candidate risk genes previously shown to be preferentially associated with PsO or PsA were selected. To evaluate the cumulative effects of these risk loci, a PsA GRS was developed using an unweighted risk allele count (cGRS) and a weighted (wGRS) approach. Additional analyses included only human leukocyte antigen (HLA) risk alleles. RESULTS: The discriminative power attributable to each GRS was evaluated by calculating the areas under the receiver operator characteristic curve (AUROC). The AUROC for the wGRS is 56.2% versus 54.1% for the cGRS, and the AUROC for the HLA-only wGRS model was 56.9% versus 55.7% for the HLA-only cGRS. CONCLUSION: The AUROC of 56.9% for HLA-only wGRS indicates that this approach has the greatest power in discriminating PsA from PsO among these models. Given that an AUROC of 56.9% is quite modest, this study suggests that using a small number of well-validated genetic loci provides limited predictive power for PsA, and that future approaches may benefit from using a larger number of genetic loci.

Novel Coronavirus Disease (COVID-19) and Biologic Therapy for Psoriasis: Successful Recovery in Two Patients After Infection with Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2).

The outbreak of the novel coronavirus known as SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) causing COVID-19 was first reported in late December 2019. Many patients with psoriasis on biologic therapy have asked their medical providers about the effect of biologics on COVID-19. However, it is currently unknown how biologic therapy for psoriasis might impact patients with psoriasis and COVID-19. In this article, we report on the clinical course of two patients on biologic medication for psoriasis who developed COVID-19 and successfully recovered from SARS-CoV-2 infection. Both patients presented with fever and respiratory symptoms, but neither patient required hospitalization. While more research is needed, it is reassuring to know that successful recovery is possible after COVID-19 infection in patients on biologic therapy for psoriasis.

Novel Coronavirus Disease (COVID-19) and Biologic Therapy in Psoriasis: Infection Risk and Patient Counseling in Uncertain Times.

With the emergence of the novel coronavirus disease (COVID-19) viral pandemic, there is uncertainty whether biologic agents for psoriasis may place patients at a higher risk for infection or more severe disease course. This commentary offers patient counseling recommendations based on the current available evidence. While there are currently no specific data for psoriasis biologics and COVID-19, data are presented here from phase III clinical trials of psoriasis biologics on rates of upper respiratory infection, influenza, and serious infection. Overall these data reveal that on the whole, psoriasis biologics do not show major increases in infection risk compared to placebo during the course of these trials. However, as the COVID-19 virus is a novel pathogen that is associated with mortality in a subset of patients, a cautious approach is warranted. We discuss factors that may alter the benefit-risk ratio of biologic use during this time of COVID-19 outbreak. Ultimately, treatment decisions should be made on the basis of dialogue between patient and provider, considering each patient's individualized situation. Once this pandemic has passed, it is only a matter of time before a new viral disease reignites the same issues discussed here.

Treatment of Plaque Psoriasis With an Excimer Laser Utilizing an Optimal Therapeutic UVB Dose Protocol.

Background: Traditionally, treatment with the excimer laser requires determining the minimal erythema dose on healthy skin or using plaque-based induration; however, these protocols often lead to underdosing of psoriatic plaques and reduced treatment efficacy. Objective: To prospectively evaluate the effect of the excimer laser on plaque psoriasis using an optimal therapeutic dose (OTD) protocol. Methods: Subjects with stable plaque psoriasis were tested with the Multi-Microdose (MMD) tip on the XTRAC excimer laser to determine a minimum blistering dose (MBD). Treatment was then initiated at 20% less than the MBD. A single psoriatic lesion was treated once weekly for up to 11 sessions. The change from baseline of the target lesion's modified psoriasis area severity index (mPASI), quality of life and safety were evaluated. Results: Thirteen subjects with a mean age of 48.9±14.9 years and Fitzpatrick skin types I-IV participated in the study. Target plaque mPASI significantly decreased at all time points relative to baseline with significant improvement by the second treatment. Patients reached mPASI-75 within 5±2 sessions. By the end of the study 92% of patients achieved mPASI-75. On average, patients maintained an mPASI score ≥50% for 60 days. Treatment was well tolerated with no erosions or hyperpigmentation. Erythema was the most common adverse event. Conclusion: The OTDTM protocol with the MMD® tip allows determining the optimal dose locally on the psoriatic plaque itself. Consequently, ineffectual dosing levels and treatments are minimized. The OTD protocol reduces treatment frequency from 2-3 times per week to once weekly. J Drugs Dermatol. 2020;19(4):349-354. doi:10.36849/JDD.2020.4891.

Machine Learning in Dermatology: Current Applications, Opportunities, and Limitations.

Machine learning (ML) has the potential to improve the dermatologist's practice from diagnosis to personalized treatment. Recent advancements in access to large datasets (e.g., electronic medical records, image databases, omics), faster computing, and cheaper data storage have encouraged the development of ML algorithms with human-like intelligence in dermatology. This article is an overview of the basics of ML, current applications of ML, and potential limitations and considerations for further development of ML. We have identified five current areas of applications for ML in dermatology: (1) disease classification using clinical images; (2) disease classification using dermatopathology images; (3) assessment of skin diseases using mobile applications and personal monitoring devices; (4) facilitating large-scale epidemiology research; and (5) precision medicine. The purpose of this review is to provide a guide for dermatologists to help demystify the fundamentals of ML and its wide range of applications in order to better evaluate its potential opportunities and challenges.

Psoriasis Vulgaris Successfully Treated with Goeckerman Treatment at Home: A Patient and Physician's Experience.

Goeckerman therapy is a highly effective treatment regimen for moderate-to-severe psoriasis. It involves regular exposure to ultraviolet B radiation and the application of crude coal tar. To our knowledge, only three centers in the USA currently offer a formal Goeckerman therapy treatment program; thus, access to this therapy is geographically limited. In this article, a motivated patient discusses his experience with generalized plaque psoriasis. This patient, while living in a Goeckerman-inaccessible area, deferred treatment with biologics and outpatient phototherapy to develop a modified Goeckerman regimen for at-home use. This home regimen, which did not involve the use of prescription-strength medications, resulted in full clearance of his psoriasis. We also discuss the patient's case from the perspective of a dermatology treatment team that has reviewed his experience.