Photoletter to the editor: The Friar Tuck sign in trichotillomania

Journal of Dermatological Case Reports

Lígia Peralta¹ 

[1] Department of Dermatology and Venereology, Hospital S. João, Faculty of Medicine, University of Porto, Porto, Portugal.

关键词: alopecia;    dermoscopy;    Friar Tuck sign;    trichotillomania;    trichoscopy;   

DOI  :  10.3315/jdcr.2012.1103

学科分类：皮肤病学

来源: Specjalisci Dermatolodz

【 摘 要 】

Trichotillomania (TTM) is an impulse-control disorder, in which patients chronically pull hair from the scalp and/or other sites. We herein report a 8-year-old male patient who developed TTM in the classical tonsure pattern ("Friar Tuck" sign). The diagnosis was confirmed by trichoscopy, which showed decreased hair density, broken hairs with different shaft lengths, black dots, signs of hemorrhage, and an absence of exclamation mark hairs.

【 授权许可】

Unknown