Visual Diagnosis: Annular Lesions in a 3-month-old Girl

A previously healthy, full-term, 3-month-old girl presents with several annular erythematous patches and plaques on the head, scalp, and upper body. The lesions first appeared at 6 weeks of age and progressively spread to involve the face and upper trunk. Past treatments included the topical antifungal butenafine 1% cream twice daily for 3 weeks without substantial improvement. The rash does not worsen with sun exposure, and there are no pets in...