Coudability Hairs: A Revisited Sign of Alopecia Areata Assessed by Trichoscopy

    June 2010 in “ Clinical and experimental dermatology ”
    Shigeki Inui, Takeshi Nakajima, Satoshi Itami
    TLDR Coudability hairs are useful markers for alopecia areata activity.
    The study assessed the usefulness of "coudability hairs" as a clinical indicator for alopecia areata (AA) using trichoscopy on 100 East Asian patients. The results showed that coudability scores positively correlated with AA disease activity, hair-pull tests, short disease duration, black dots, and exclamation-mark hairs, while negatively correlating with short vellus hairs. The study concluded that coudability hairs are valuable markers for AA disease activity and can serve as a substitute for the hair-pull test.
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