Image of the Week: Ring-Shaped Lesions on the Hands

A 69-year-old woman with a history of hypertension and irritable bowel syndrome presents with multiple ring-shaped lesions on both hands. The lesions are nonpruritic and have developed over the past 4 days. At a follow-up appointment 2 weeks after initial presentation, the lesions persist. What is the most likely diagnosis?

Learn more about this case, take the quiz, and join the conversation on Figure 1.

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