Hair shafts in trichoscopy: clues for diagnosis of hair and scalp diseases.
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.
Department of Dermatology, CSK MSW, Woloska 137, Warsaw 02-507, Poland; Department of Neuropeptides, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawinskiego 5, Warsaw 02-106, Poland; Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, Warsaw 02-008, Poland.
Lidia
L
Rudnicka
Adriana
A
Rakowska
Marta
M
Kerzeja
Małgorzata
M
Olszewska
D000506:Alopecia Areata / Q000175:diagnosis* / Q000473:pathology; D046169:Dermoscopy; D003937:Diagnosis, Differential; D006197:Hair / Q000473:pathology*; D006201:Hair Diseases / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D012536:Scalp Dermatoses / Q000175:diagnosis* / Q000473:pathology
Alopecia areata; Dermatoscopy; Dermoscopy; Flame hairs; Trichoptilosis; Trichorrhexis nodosa; Trichoscopy; Trichotillomania