Progressive ascending telangiectasias

T cell–mediated acute localized exanthematous pustulosis caused by finasteride

Central centrifugal cicatricial alopecia in Black men: A case series highlighting key clinical features in this cohort

IgG/IgA pemphigus with differing regional presentations

Cells to Surgery Quiz: April 2019

COVID-19 vasculitis and novel vasculitis mimics.

Report of the Topical Calcineurin Inhibitor Task Force of the American College of Allergy, Asthma and Immunology and the American Academy of Allergy, Asthma and Immunology

Adverse Cardiovascular, Cerebrovascular, and Peripheral Vascular Effects of Marijuana Inhalation: What Cardiologists Need to Know

Focus

Successful treatment of squamous cell carcinoma with intralesional methotrexate

Recessive Dystrophic Epidermolysis Bullosa: Advances in the Laboratory Leading to New Therapies

Ulcerated, tender nodules of the lower extremities

Reducing mortality in individuals at high risk for advanced melanoma through education and screening

Accurately determining the incidence and prevalence of dermatologic disease in most large populations has been challenging for reasons ranging from the lack of easily quantifiable tests and measures to imprecision around definitions of race, ethnicity, photo skin type, pigmentation, and population groups. Compounding the problems with these categorizations is the fact that skin disease and skin health are affected not just by inherent risk factors but also by habits and environment. Thus, a fundamental question remains as we evaluate the effects of cultural and environmental factors: do genetic factors account for most of the difference that we see in skin types? Is the primary influence the way the skin mediates the environmental insult of UV radiation or how inflammation is handled? Is melanization the primary characteristic that we should measure and consider? This article will provide an introduction to current knowledge and future directions researchers are taking in differentiating both the biological differences of skin and the clinical manifestations of skin disease among the groups described above. This discussion will be followed by a brief overview of cultural practices and environmental factors that are known to have significant impact on skin disease and a summary of the most common conditions that are encountered worldwide.

Retroperitoneal Fibrosis and Asbestosis—A Plausible Association?

Opioid Antagonists