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.
36 citations
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August 2018 in “Dermatologic Clinics” Trichoscopy is a useful tool for diagnosing hair disorders without pulling out hair.
30 citations
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February 2015 in “Anais Brasileiros de Dermatologia” Trichoscopy is useful for diagnosing Netherton syndrome in children with skin issues.
5 citations
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November 2008 in “Advances in Dermatology” The review highlights the importance of stem cells in hair health and suggests new treatment strategies for hair loss conditions.
33 citations
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June 2016 in “Pediatric Dermatology” Some congenital hair disorders improve in childhood or with treatments like minoxidil and retinoids, while others like Netherton syndrome and trichothiodystrophy have a poor prognosis.
30 citations
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May 2004 in “Journal der Deutschen Dermatologischen Gesellschaft” The document concludes that early diagnosis and treatment are crucial for children with hair loss to prevent permanent damage, although not all conditions can be effectively treated.
23 citations
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November 2001 in “Archives of Dermatology” Genetic discoveries are key for understanding, diagnosing, and treating inherited hair and nail disorders.
