Hair Shaft Disorders

    November 2021 in “ CRC Press eBooks ”
    Bengisu Orzalan, Lílian Mathias Delorenze, Michela Starace, Teresa Russo, Giuseppe Argenziano, Vincenzo Piccolo
    TLDR Hair shaft disorders cause fragile, brittle, and abnormal-looking hair.
    Hair shaft disorders encompass a variety of congenital and acquired conditions affecting the hair shaft, leading to issues such as fragility, texture, and appearance changes. Trichorrhexis nodosa, the most common defect, results in sparse, brittle hair and can indicate metabolic disorders. Monilethrix, a rare disorder, features short, fragile hair with a beaded appearance. Trichorrhexis invaginata, or "bamboo hair," involves multiple knots and is often associated with Netherton syndrome. Pili torti involves hair fibers twisted 180 degrees and can be congenital or acquired.
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