International Journal of Trichology International Journal of Trichology
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ORIGINAL ARTICLE
Year : 2012  |  Volume : 4  |  Issue : 1  |  Page : 19-22

Value of trichoscopy versus trichogram for diagnosis of female androgenetic alopecia


1 Department of Dermatology, University Hospital of Zurich, 8091 Zürich, Switzerland
2 Center for Dermatology and Hair Diseases Professor Trüeb, Bahnhoplatz 1A, 8304 Zentrum Wallisellen, Switzerland

Correspondence Address:
Ralph M Trüeb
Center for Dermatology and Hair Diseases, Bahnhofplatz 1A, CH 8304 Zentrum Wallisellen
Switzerland
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-7753.96080

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Background: Female androgenetic alopecia (FAGA) is a frequent cause of hair loss in women. Standard diagnostic methods are clinical inspection, pull test, and trichogram. It has been suggested that scalp dermoscopy (trichoscopy) revealing diversity of hair shaft diameter >20% is diagnostic of FAGA. Objective: To evaluate the value of trichoscopy as compared to the trichogram for the diagnosis of FAGA. Patients and Methods: Retrospective case study of 162 women with the complaint of hair loss who underwent trichoscopic examination and trichograms. Results: Of all women diagnosed FAGA (55%), 62% were diagnosed by trichogram, 72% by trichoscopy with a cut-off point of 20%, and 100% irrespective of the degree of diversity of hair shaft diameter. Conclusions: Trichoscopy is a valuable and superior method to the trichogram for diagnosis of FAGA, especially in early cases, with the highest yield irrespective of the suggested cut-off of 20% diversity of hair shaft.


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