Annular lesions with dark centers

Case #1

A 9-month-old female presents to the emergency department with a 1-week history of rash. The infant is otherwise healthy, but the mother reports that, 1 week earlier, the patient had an upper respiratory infection with low-grade fever, rhinorrhea, and cough that has since resolved. The infant does not seem to experience pain with eating, drinking, urinating, or defecating. She ...