摘要
To the editor： We report a 23-year-old Chinese man, who presented with a 2-month history of recurrent eruptions of asymptomatic, red, necrotic papules on his face and extremities. The skin lesions would regress spontaneously within several days, leaving atrophic scars. He had no systemic symptoms. A physical examination revealed many papules and nodules on his trunk and extremities （Figure I A）. Some papules had a necrotic center covered by black crusts. No lymphadenopathy was found.
To the editor： We report a 23-year-old Chinese man, who presented with a 2-month history of recurrent eruptions of asymptomatic, red, necrotic papules on his face and extremities. The skin lesions would regress spontaneously within several days, leaving atrophic scars. He had no systemic symptoms. A physical examination revealed many papules and nodules on his trunk and extremities （Figure I A）. Some papules had a necrotic center covered by black crusts. No lymphadenopathy was found.
