Derm Dx: Deeply hyperpigmented, slightly raised papules

A 30-year-old Hispanic woman presents for evaluation of a pruritic eruption on her legs and back that developed 2 months previously. She denies any history of systemic disease, including hepatitis and illicit drug use, as well as any prior history of skin disorders. A short course of oral prednisone, administered elsewhere, helped alleviate the pruritus; however, the condition flared with ...