Fig. 1.

Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flowchart. *Excluded records: reviews, book chapters, articles in languages other than English, case reports, articles concerning animals, articles concerning different diseases. **Excluded articles: 1 article was based on a number of patches instead of patients, 3 articles did not present the frequency of trichoscopic findings, 1 article contained an unclear data considering trichoscopic findings, 1 article described trichotemnomania instead of trichotillomania. ***10 original studies and 3 case series.