Dermoscopic Findings of Temporal Triangular Alopecia

Abstract

Background: Temporal triangular alopecia (TTA), also referred as congenital triangular alopecia, is an uncommon dermatosis of unknown etiology. It is characterized by a nonscarring, circumscribed alopecia often located unilaterally in the fronto-temporal region that usually emerges at ages 2-9 years. Differential diagnosis of other types of localized alopecia such as alopecia areata is necessary in some cases. Objective: To evaluate the potential benefit of trichoscopy in the clinical diagnosis of TTA. Methods: Trichoscopic examination of 15 patients suffering from TTA using the DermLite II Pro and 10X optical zoom by Samsung S4 Zoom camera and their dermoscopic findings were done. Conclusion: Dermoscopy is a noninvasive tool that aids in the differential diagnosis of TTA.