Trichostasis spinulosa of the scalp mimicking Alopecia Areata black dots

• Autor(a) principal: Chagas,Flavianne Sobral Cardoso
• Data de Publicação: 2014
• Outros Autores: Donati,Aline, Soares,Isabella Ibrahim Doche, Valente,Neusa Sakai, Romiti,Ricardo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Anais brasileiros de dermatologia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962014000400685
• topic: Alopecia; Alopecia areata; Dermoscopy; Hair diseases

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.