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Presentation
A 53-year-old man visited his doctor concerned about a spreading rash underneath his arms for the past 3 weeks. He initially thought it was an allergic reaction to a new deodorant, but it wasn’t itchy, and it persisted after stopping the deodorant. The patient had a history of type II diabetes. On examination, a broad, well-demarcated, thin, scaly plaque was seen extending from the lateral chest over the axilla to the upper arm. Can you diagnose this patient?
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7% A. Acanthosis nigricans
6% B. Erythrasma
2% C. Inverse psoriasis
4% D. Tinea corporis
Learnings
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