Extract

(See pages 826–827 for the Answer to the Photo Quiz.)

A 41-year-old African American male, infected with human immunodeficiency virus (HIV), presents to the dermatology office with a 1-month history of a pruritic rash on his left lower abdomen. Two weeks after the initial lesion, a few pruritic lesions developed on his trunk and arms. His primary care provider treated this rash with topical steroids, which have had no effect. The patient denies any constitutional symptoms. He has been receiving highly active antiretroviral therapy for 14 years. His CD4 cell count is 421 cells/mm3. He has been sexually active with 1 male partner for the past 3 years. Physical examination reveals a 10 x 4-cm erythematous plaque with induration and scaling on the left lower abdomen (Figure 1). There are a few scattered macules and papules on the trunk, arms, and back of the neck.

What is your diagnosis?

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