Alopecia areata predictive score: A new trichoscopy-based tool to predict treatment outcome in patients with patchy alopecia areata.

In patchy alopecia areata, upright regrowing hairs and pigtail hairs are positive, while black dots, broken hairs, exclamation mark hairs, and tapered hairs negative predictive markers. Alopecia Areata Predictive Score is new trichoscopy-based tool to predict treatment outcome in patients with patchy alopecia areata.