Trichoscopy of alopecia areata in children. A retrospective comparative analysis of 50 children and 50 adults.

The most common trichoscopic findings of alopecia areata in children are empty follicular openings and short vellus hairs. Pigtail hairs and empty follicular openings are more commonly presented in children compared with adults. In contrast, yellow dots are less commonly observed in children compared with adults. Triangular hairs (short hidden hairs) are new trichoscopic findings of alopecia areata.