A previously healthy 42-year-old man presented with a 20-day history of an expanding, asymptomatic rash on his trunk. The initial lesion had been a red spot on the patient’s left side. 10 days after that spot had first appeared, smaller lesions had developed elsewhere. The patient reported no viral prodrome. The skin examination — including the initial lesion that had appeared — is shown. What is the diagnosis?
September 4, 2025 7.5K 8 4
