58 citations
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November 1969 in “British Journal of Dermatology” Netherton's disease causes multiple hair defects.
Recognizing bamboo hair helps diagnose Netherton’s syndrome.
33 citations
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March 2006 in “Seminars in cutaneous medicine and surgery” The document explains how to identify different hair problems using a microscope.
2 citations
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May 2020 in “Journal of the American Academy of Dermatology” Hair shaft changes may be linked to CCCA, but their role is unclear.
14 citations
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June 2005 in “PubMed” A rare ear cyst contained hair fragments.
15 citations
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August 2015 in “Scanning” Corkscrew and cigarette-ash-shaped hairs in tinea capitis are caused by internal hair degradation and external resistance.
4 citations
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December 2017 in “American Journal of Dermatopathology” Naked hair shafts are significantly associated with scarring hair loss and may help diagnose it, especially when multiple are found.
35 citations
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September 2003 in “Archives of dermatology” Tiger tail bands in hair are caused by wavy hair fibers with melanin, unlike straight fibers in normal hair.
86 citations
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October 2013 in “Dermatologic Clinics” Trichoscopy is a useful non-invasive method for diagnosing different hair loss conditions.
28 citations
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March 2014 in “Biological reviews/Biological reviews of the Cambridge Philosophical Society” The document concludes that hair curvature can be explained by the growth patterns caused by the shape and separation of cells in the hair follicle and is affected by specific molecular pathways.
June 2020 in “Journal of Investigative Dermatology” Hair shaft malformation contributes to Central Centrifugal Cicatricial Alopecia.
8 citations
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May 2005 in “The American journal of dermatopathology/American journal of dermatopathology” The hair defect is due to abnormal inner root sheath keratinization.
4 citations
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January 1981 in “PubMed” Hair medullary cells in mammals vary in complexity, with humans having more structured cells similar to inner root sheath cells.
3 citations
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October 1994 in “Medical Molecular Morphology” The lower part of rat vibrissa hair gets more blood and is well-protected for growth.
September 2023 in “Cutis” A baby girl has a hair disorder called monilethrix, causing fragile hair that may improve over time.
1 citations
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January 2018 in “Jornal Brasileiro de Patologia e Medicina Laboratorial” Monilethrix causes brittle hair and hair loss, and it runs in families.
5 citations
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October 2020 in “Experimental dermatology” A specific type of skin cell creates an opening for hair to grow out, and problems with this process can lead to skin conditions.
30 citations
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January 1994 in “Micron” Mature hair surfaces are formed by keratinized cells with developed layers, not just modified plasma membranes.
1 citations
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March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
4 citations
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January 2014 in “Indian dermatology online journal” Monilethrix is a genetic hair disorder causing fragile, beaded hair with no effective treatment.
40 citations
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February 1990 in “Journal of The American Academy of Dermatology” A 17-year-old developed woolly hair nevus in adolescence, which is unusual, and over time the hair darkened and straightened slightly, but microscopic changes persisted.
research Hair
January 1983 in “Elsevier eBooks” Hair grows from living roots, is made of dead keratin, and goes through growth, rest, and shedding stages.
14 citations
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January 2010 in “Dermatology” Some people with congenital triangular alopecia have a central tuft of hair in the bald patch, but the cause is unknown.
December 2025 in “IP Indian Journal of Clinical and Experimental Dermatology” Hair shaft disorders often indicate genetic or systemic issues and are managed by minimizing damage.
January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
15 citations
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January 1988 Hair follicles have unique proteins that vary by species and are influenced by nutrition.
2 citations
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July 2019 in “Indian dermatology online journal” A 17-year-old girl and her brothers have a rare hair condition with long eyelashes, thick eyebrows, and easily pluckable hair.
1 citations
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January 2018 in “International Journal of Trichology” Circle hairs are harmless, spiral-shaped body hairs that don't need medical treatment.
2 citations
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June 2001 in “Medical Electron Microscopy” Trichilemmal cysts may form from hair follicle outer root sheath growth.
36 citations
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August 2018 in “Dermatologic Clinics” Trichoscopy is a useful tool for diagnosing hair disorders without pulling out hair.