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    Glossary Pili Torti

    hair strands are twisted and flattened, prone to breakage

    Pili Torti is a rare hair shaft disorder where the hair strands are twisted along their length, giving them a flattened, ribbon-like appearance. This condition can make the hair more prone to breakage and is often associated with genetic conditions or acquired through environmental factors like excessive heat or chemical exposure.

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    1. Pili torti in association with citrullinemia Journal of the American Academy of Dermatology · 1985 · 28 citations
    2. Pathogenesis in pili torti: morphological study Journal of Dermatological Science · 1994 · 23 citations
    3. Acquired pili torti--a structural hair shaft defect in anorexia nervosa. PubMed · 1996 · 15 citations
    4. Pili Torti: A Feature of Numerous Congenital and Acquired Conditions Journal of clinical medicine · 2021 · 9 citations
    5. A case of pili torti in a young adult domestic short-haired cat Veterinary Dermatology · 2013 · 6 citations
    6. Loose anchoring of anagen hairs and pili torti due to erlotinib International Journal of Trichology · 2016 · 5 citations
    7. [Congenital hereditary hypotrychosis. Generalized autosomal dominant hypotrichosis with pili torti (hypotrichosis congenita hereditaria Marie Unna)]. PubMed · 1979 · 5 citations
    8. Morphological analyses in fragility of pili torti with Björnstad syndrome The Journal of Dermatology · 2016 · 4 citations
    9. Lichen Planopilaris with Pili Torti and Ectodermal Dysplasia: a hair curling case report. Case Reports in Dermatology · 2025
    10. Morphological study in a mechanism of congenital pili torti formation: Björnstad syndrome Journal of Dermatological Science · 2016
    11. [Black piedra in South Africa. 1st description in a child with bamboo hair, pili torti and congenital erythroderma ichthyosiforme]. PubMed · 1962
    12. Structural abnormalities of the hair shaft Journal of The American Academy of Dermatology · 1987 · 126 citations
    13. Keratin 17 Expression in the Hard Epithelial Context of the Hair and Nail, and its Relevance for the Pachyonychia Congenita Phenotype Journal of Investigative Dermatology · 2000 · 88 citations
    14. Trichoscopy in genetic hair shaft abnormalities Journal of Dermatological Case Reports · 2008 · 74 citations
    15. Lamellar ichthyosis, dwarfism, mental retardation, and hair shaft abnormalities Journal of the American Academy of Dermatology · 1980 · 61 citations
    16. The genetics of hair shaft disorders Journal of The American Academy of Dermatology · 2008 · 59 citations
    17. Trichoscopy in Hair Shaft Disorders Dermatologic Clinics · 2018 · 36 citations
    18. Prognosis and Management of Congenital Hair Shaft Disorders with Fragility—Part I Pediatric Dermatology · 2016 · 33 citations
    19. Absence of vellus hair in the hairline: a videodermatoscopic feature of frontal fibrosing alopecia British Journal of Dermatology · 2013 · 33 citations
    20. Office Diagnosis of Hair Shaft Defects Seminars in cutaneous medicine and surgery · 2006 · 33 citations
    21. Neurotrichosis: Hair‐shaft Abnormalities associated with Neurological Diseases Developmental Medicine & Child Neurology · 1982 · 33 citations
    22. Differential diagnosis of hair loss in children. Differentialdiagnose des Haarausfalls bei Kindern Journal der Deutschen Dermatologischen Gesellschaft · 2004 · 30 citations
    23. Light microscopy of the hair: A simple tool to "untangle" hair disorders International Journal of Trichology · 2011 · 24 citations
    24. Amelioration by Copper Supplementation of Mutant Gene Effects in the Crinkled Mouse Experimental Biology and Medicine · 1975 · 23 citations
    25. Scarring Folliculitis in the Ectrodactyly-Ectodermal Dysplasia-Clefting Syndrome Dermatology · 1997 · 20 citations
    26. Unruly hair British Journal of Dermatology · 1985 · 19 citations
    27. Prognosis and Management of Congenital Hair Shaft Disorders without Fragility—Part II Pediatric Dermatology · 2016 · 14 citations
    28. The trichoscopic features of hair shaft anomalies induced by epidermal growth factor receptor inhibitors: A case series Journal of the American Academy of Dermatology · 2020 · 7 citations
    29. Light Microscopic Hair Abnormalities in Children: Retrospective Review of 119 Cases in a 10-Year Period Pediatric and Developmental Pathology · 2013 · 7 citations
    30. [The Netherton syndrome with alopecia and prolinuria]. PubMed · 1978 · 4 citations