1 MCQs in Dermatology for NEET PG
A 22-year-old woman presents with a 10-day history of a solitary 4 cm pink, oval, scaly patch on her left flank, followed 4 days later by a sudden generalized eruption of smaller similar lesions on the trunk and proximal extremities. The structure marked **A** in the diagram represents the initial lesion. Which of the following clinical features of the structure marked **A** is MOST important in distinguishing this condition from tinea corporis and secondary syphilis?
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