Trichoscopy in paediatric patients with tinea capitis: a useful method to differentiate from alopecia areata

Abstract

Objectives: Trichoscopy (hair and scalp dermatoscopy) facilitates the diagnosis of hair and scalp disorders. The aim of our study was to identify the trichoscopic features in diagnosis of tinea capitis (TC) and to compare these findings with alopecia areata (AA).

Materials and methods: Our study included 15 children with TC and 10 children with AA as a control group. Affected areas of the scalp on all the cases were analysed under a magnification of 20X and 40X by a digital dermatoscope (MoleMax II).

Results: Broken and dystrophic hairs were found in dermatological examination of all the patients with TC. In addition, corkscrew hairs, comma hairs and black dots were observed respectively. Yellow dots, exclamation mark hairs and vellus hair were observed in patients with AA.

Conclusions: Broken and dystrophic hairs, corkscrew hairs, comma hairs and black dots were observed only in patients with TC; yellow dots, exclamation mark hairs and vellus hairs were observed only in patients with alopesi areata. Further studies with larger numbers of patients are needed to determine specific trichoscopic findings of TC and to access differential diagnosis.