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Endgames Case Review

Solitary circumscribed alopecia

BMJ 2024; 384 doi: (Published 22 February 2024) Cite this as: BMJ 2024;384:e076986
  1. Li-wen Zhang, attending dermatologist1,
  2. Juan Wu, attending dermatologist2,
  3. Rong-hua Xu, professor of neurosurgery3,
  4. Tao Chen, professor of dermatology1
  1. 1Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
  2. 2Sexually Transmitted Disease Institute, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
  3. 3Institute of Dermatology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China
  1. Correspondence to: T Chen 13980427003{at}

A 9 year old girl presented with a solitary hairless area on the left side of her scalp that was first noticed when she was aged 3 years but had not progressed over time. The girl was in good health and had no history of trauma, pruritus, or discomfort in the area. On physical examination an oval non-cicatricial (non-scarring) alopecic patch was observed in the left frontotemporal region (fig 1). Dermoscopy showed hairs of variable diameter and length, white hairs, vellus hairs, and empty follicles (fig 2). No fungi were detected on direct microscopic examination.

Fig 1

Oval non-scarring alopecic area in left frontotemporal region

Fig 2

Dermoscopic image showing hairs of variable …

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