Antifungal creams haven't made a dent in this intermittent rash. What is this lesion?
A 45-year-old man presents with a 4- to 5-year history of an intermittent, asymptomatic, red, circular rash on his trunk. Trials of antifungal creams have not been successful. The patient is otherwise healthy and takes no medications.
Answer:E. Erythema annulare centrifugum
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