S1 Guideline for Diagnostic Evaluation in Androgenetic Alopecia in Men, Women and Adolescents

U. Blume-Peytavi; A. Blumeyer; A. Tosti; A. Finner; V. Marmol; M. Trakatelli; P. Reygagne; A. Messenger


The British Journal of Dermatology. 2011;164(1):5-15. 

In This Article

Definition of Androgenetic Alopecia

AGA is a nonscarring progressive miniaturization of the hair follicle with a usually characteristic pattern distribution in genetically predisposed men and women. In men, AGA typically shows a pattern distribution, most commonly a male pattern, but occasionally a female pattern can be seen.[2,3] In women, AGA typically presents as a diffuse reduction in hair density over the frontal and central areas, but the parietal and occipital regions may also be involved.[4] Occasionally, AGA occurs in a male pattern in women.


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