4 citations
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January 1976 in “Archives of Dermatological Research” Metabolic disorders can cause hair structure defects and growth issues, but amino acid levels in hair remain normal.
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March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
34 citations
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December 1984 in “Journal of Cutaneous Pathology” Monilethrix hair issues are due to problems in the hair's internodes.
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July 1991 in “Journal of The American Academy of Dermatology” Understanding hair follicle anatomy helps diagnose hair disorders.
13 citations
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January 2012 in “International journal of trichology” The study found that hair fragility in Pili annulati may be caused by cavities and damage within the hair shafts.
January 2025 in “Open Science Framework” Hair disorders significantly affect self-image, mental health, and quality of life.
8 citations
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May 2008 in “Applied surface science” Mummy hair from the Taklamakan desert has calcium and phosphorus inside.
17 citations
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June 2012 in “Journal of experimental zoology. Part B, Molecular and developmental evolution” Hair in mammals likely evolved from glandular structures, not scales.
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March 2020 in “Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy” Alopecic hair has more irregular structures and chemical changes than normal hair, reducing its strength.
January 2008 in “Medical Entomology and Zoology” 9 citations
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February 1966 in “British Journal of Dermatology” January 2006 in “Dianzi xianwei xuebao” Netherton syndrome causes specific skin and hair changes that help in early diagnosis.
June 2023 in “Zenodo (CERN European Organization for Nuclear Research)” 3 citations
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July 2019 in “Fibers And Polymers/Fibers and polymers”
January 2014 in “Journal of the Korean Society of Design Culture” The study confirmed that changes in hair structure in women with hair loss conditions matched what is taught in beauty college trichology courses.
June 2008 in “Springer eBooks”
January 2024 in “Journal of cutaneous and aesthetic surgery” Scalp injuries and harsh hair care can cause severe hair matting in children.
1 citations
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January 2010 in “Biological and medical physics series” Human hair's structure and properties were studied using advanced microscopes and mechanical tests.
17 citations
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June 1990 in “PubMed” Hair varies in size and features depending on body region.
1 citations
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January 2007 in “AIP conference proceedings” High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.
27 citations
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September 1988 in “PubMed” Hair follicle shape determines hair type: curly, straight, or in-between.
January 2019 in “Global Dermatology” Genetic hair shaft abnormalities can be seen with microscopes and often affect scalp hair.
5 citations
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January 2009 in “International Journal of Trichology” Two siblings had a rare hair condition with banded hair, which doesn't need treatment.
7 citations
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January 1990 December 2025 in “ILDS-DEV”
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January 2017 in “Annals of Dermatology” Frequent hairdryer use may worsen hair fragility in people with Pili Annulati.
32 citations
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December 1969 in “The Lancet” Children with marasmus have more resting hair follicles and thinner, less pigmented hair, showing long-term malnutrition.
May 2016 in “Hair transplant forum international”