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A 46-year-old woman with a history of infection with the human immunodeficiency virus (HIV) presented to the emergency department for evaluation of a painful rash. The CD4 cell count was 365 per cubic millimeter, the HIV load was undetectable, and the patient had not received antiretroviral therapy. A violaceous plaque that measured 9 cm by 9 cm and consisted of four concentric rings with intervening areas of normal skin and numerous yellow-white pustules was found on the pretibial surface of the patient's right leg. At the periphery of the rings, there was fine scaling of the skin. The patient reported . . . [Full Text of this Article] |