Hair Pathology

    July 2018 in “ Elsevier eBooks
    Mariya Miteva
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    TLDR Triple horizontal scalp biopsies are 98% accurate in diagnosing hair loss, better than single biopsies.
    The document from 2019 provides a comprehensive analysis of hair loss conditions and their diagnosis through scalp biopsies, emphasizing the superiority of triple horizontal biopsies with a 98% accuracy rate over single biopsies at 79%. It details the histopathological features of various forms of alopecia, such as alopecia areata, chronic telogen effluvium, androgenetic alopecia, alopecia areata incognito, trichotillomania, and different scarring alopecias including lichen planopilaris and frontal fibrosing alopecia. The document also covers other hair disorders like traction alopecia, folliculitis decalvans, dissecting cellulitis, acne keloidalis nuchae, erosive pustular dermatosis, seborrheic dermatitis, scalp psoriasis, lichen simplex chronicus, tinea capitis, syphilitic alopecia, and chemotherapy-induced alopecia, highlighting the importance of clinical correlation and horizontal section assessment for accurate diagnosis. The number of cases in the studies mentioned ranges from 10 to unspecified, and the document underscores the necessity of clinicopathological correlation in diagnosing hair disorders.
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