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Endgames Spot Diagnosis

Pruritic annular concentric plaques

BMJ 2019; 367 doi: (Published 10 October 2019) Cite this as: BMJ 2019;367:l5512
  1. Yue-Tong Qian, resident dermatologist,
  2. Dong-Lai Ma, professor of dermatology
  1. Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
  1. Correspondence to Dong-Lai Ma mdonglai{at}

A previously healthy 32 year old man presented with a three month history of multiple well defined annular concentric plaques with slightly raised scaly borders on his scalp, forehead, right chest, back, left forearm, right groin, and thighs, with mild pruritis (fig 1). He had no associated fever, malaise, headache, or arthralgia. He reported having unprotected sexual intercourse with several female partners over the last year. No lesions were observed on the mucosal surfaces, palms, or soles. He …

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