title: Evaluation and diagnosis of the hair loss patient: part II. Trichoscopic and laboratory evaluations.
abstract: The use of trichoscopy for evaluating a number of hair and scalp disorders is gaining popularity. It is a simple and noninvasive in vivo tool for visualizing hair shafts and the scalp. Recently, alopecias have been classified according to their trichoscopic findings. The second part of this 2-part continuing medical education article reviews recent advances in this field and describes a systematic approach for using the differential diagnostic findings of trichoscopy in alopecia.
authors.affiliation: Al Imam Muhammad Ibn Saud Islamic University, College of Medicine, Riyadh, Saudi Arabia.
authors.forename: Thamer
authors.initials: T
authors.lastname: Mubki
authors.affiliation: Department of Dermatology, Medical University of Warsaw, Warsaw, Poland; Department of Neuropeptides, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
authors.forename: Lidia
authors.initials: L
authors.lastname: Rudnicka
authors.affiliation: Department of Dermatology, Medical University of Warsaw, Warsaw, Poland.
authors.forename: Malgorzata
authors.initials: M
authors.lastname: Olszewska
authors.affiliation: Department of Dermatology and Skin Sciences, University of British Columbia, Vancouver, British Columbia, Canada; Langone Medical Center, New York, New York. Electronic address: jerry.shapiro@vch.ca.
authors.forename: Jerry
authors.initials: J
authors.lastname: Shapiro
mesh_terms: D000505:Alopecia / Q000175:diagnosis* / Q000473:pathology / Q000628:therapy*; D002481:Cellulitis / Q000175:diagnosis; D046169:Dermoscopy / Q000379:methods*; D005355:Fibrosis; D006197:Hair / Q000002:abnormalities / Q000473:pathology; D006801:Humans
keywords: alopecia areata; androgenetic alopecia; dermatoscopy; dermoscopy; discoid lupus erythematosus; dissecting cellulitis; lichen planopilaris; patterned hair loss; trichoscopy; videodermatoscopy