Hair counts in scalp biopsy of males and females with androgenetic alopecia compared with normal subjects

    July 2009 in “Journal of Cutaneous Pathology
    Fatemeh Sari Aslani, Ladan Dastgheib, Bibi Maryam Banihashemi
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    TLDR AGA patients have fewer hairs and smaller follicles; T:V ratio above 4:1 may indicate AGA.
    This study compared hair counts in scalp biopsies of males and females with androgenetic alopecia (AGA) to those of normal subjects. The study found that AGA patients had decreased hair counts and increased follicular miniaturization compared to normal subjects. The study also found that scalp biopsies can be useful in diagnosing AGA and monitoring its progression. The study suggests that a T:V ratio higher than 7:1 might be abnormal in Iranians, and a ratio greater than 4:1 could be an indicator of AGA.
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