A mother brings her 7-year-old son to your urgent care center because she’s concerned about asymptomatic lesions that have developed on his knees over the past couple of weeks. On examination, you observe smooth, crusted and scaly, erythematous and whitish papules and nodules on both knees. There was no history of recent trauma. The patient had a history of dermatomyositis.

View the image and consider what your diagnosis and next steps would be. Resolution of the case is described on the following page.

A 7-Year-Old Male with Lesions on His Knees
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