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Hair Shafts in Trichoscopy

2013; Elsevier BV; Volume: 31; Issue: 4 Linguagem: Inglês

10.1016/j.det.2013.06.007

1558-0520

Lidia Rudnicka, Adriana Rakowska, Marta Kurzeja, Małgorzata Olszewska,

Nail Diseases and Treatments

Trichoscopy (hair and scalp dermoscopy) analyzes the structure and size of growing hair shafts, providing diagnostic clues for inherited and acquired causes of hair loss. Types of hair shaft abnormalities observed include exclamation mark hairs (alopecia areata, trichotillomania , chemotherapy-induced alopecia), Pohl-Pinkus constrictions (alopecia areata, chemotherapy-induced alopecia , blood loss, malnutrition), comma hairs (tinea capitis), corkscrew hairs (tinea capitis), coiled hairs (trichotillomania), flame hairs (trichotillomania), and tulip hairs (in trichotillomania, alopecia areata). Trichoscopy allows differential diagnosis of most genetic hair shaft disorders. This article proposes a classification of hair shaft abnormalities observed by trichoscopy.