Trichostasis spinulosa of the scalp mimicking Alopecia Areata black dots

Anais Brasileiros de Dermatologia

Flavianne Sobral Cardoso Chagas¹  Aline Donati¹  Isabella Ibrahim Doche Soares¹  Neusa Sakai Valente¹  Ricardo Romiti¹ 

关键词: Alopecia;    Alopecia areata;    Dermoscopy;    Hair diseases;   

DOI  :  10.1590/abd1806-4841.20142407

来源: SciELO

【 摘 要 】

Alopecia areata is a common autoimmune disorder that leads to nonscarring hair loss. Black dots, also called comedo-like cadaver hairs, can be found in almost 50% of alopecia areata patients and indicate disease activity. Trichostasis spinulosa is a follicular disorder resulting from the retention of numerous hairs surrounded by a keratinous sheath in dilated follicles. Trichostasis spinulosa is a relatively common but underdiagnosed disorder of hair follicles. Here, we describe a man with alopecia areata of the eyebrows, androgenetic alopecia and trichostasis spinulosa at the vertex and show how dermoscopy can be useful in distinguishing black dots from Trichostasis spinulosa lesions.

【 授权许可】

CC BY-NC   
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