Trichoscopic Patterns of Nonscarring Alopecia

In 2019, a study was conducted on 100 patients to examine the trichoscopic patterns of different types of nonscarring alopecia. The study found that yellow dots, black dots, and broken hairs were the most common features in alopecia areata, hair shaft diameter diversity was most common in telogen effluvium, and hair miniaturization was most common in androgenetic alopecia. The study concluded that trichoscopy, a noninvasive method, is a valuable tool for diagnosing and monitoring these conditions, helping to avoid biopsies and assess various stages and severity. The most sensitive diagnostic markers were yellow dots and short vellus hair, while the most specific markers were black dots, tapering hair, and broken hair. The study recommended the routine use of trichoscopy in the examination of nonscarring alopecia.