Comparison Between Trichoscopic and Histopathological Evaluations of Hair Parameters

    May 2022 in “ Clinical, Cosmetic and Investigational Dermatology ”
    Danchen Hu, Ping Tu, Songfan Yang
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    TLDR Trichoscopy and pathological examination both have unique benefits and cannot completely replace each other in evaluating hair.
    The study "Comparison Between Trichoscopic and Histopathological Evaluations of Hair Parameters" conducted a cross-sectional study on 30 volunteers to compare the efficacy of trichoscopy and pathologic examination in hair counting. The study found that hair densities varied across different scalp regions, with the highest density in the vertex region. The occipital region had a hair density of 163.07±28.17/cm2, a vellus ratio of 6.60±3.95%, and a hair shaft diameter of 74.52±8.02μm. Some volunteers showed pathologic features of androgenetic alopecia (AGA) in occipital areas, suggesting that AGA can affect this area even in early stages. The study concluded that both trichoscopy and pathological examination have their advantages and disadvantages, and the data obtained from these two methods are different to some extent, which cannot be substituted entirely for each other.
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