January 2021 in “Dermatology online journal” One twin girl has Loose anagen syndrome with poorly anchored hair, diagnosed with a simple hair pull test, while her identical twin does not have the condition.
April 2016 in “Journal of Investigative Dermatology” Mutations in the TSPEAR gene cause a new form of ectodermal dysplasia affecting hair and tooth development.
5 citations
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June 2014 in “Gastroenterology report” Cronkhite-Canada syndrome can sometimes show unusual colonic adenomatous polyps.
September 2021 in “Mağallaẗ al-Muẖtar li-l-ʿulūm” Two sisters have rare hair disorders causing short, fragile, kinky hair.
A rare genetic mutation causes severe immune issues, hair loss, and nail problems.
75 citations
,
September 1985 in “Archives of dermatology” Two boys had a rare skin condition needing to be differentiated from similar disorders, with unclear inheritance due to few cases.
18 citations
,
February 2015 in “Acta Crystallographica Section D: Structural Biology” The study concludes that certain domains in Clostridium histolyticum enzymes are structurally unique, bind calcium to become more stable, and play distinct roles in breaking down collagen, with potential applications in medicine and drug delivery.
January 2023 in “Zenodo (CERN European Organization for Nuclear Research)” PCOS is a major health issue affecting multiple hormone-producing organs.
13 citations
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September 1997 in “Archives of Dermatology” The boy likely has a fungal infection causing hair loss.
478 citations
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September 1996 in “Proceedings of the National Academy of Sciences” Overexpression of PTHrP in chondrocytes causes short-limbed dwarfism and delayed bone formation in mice.
March 2025 in “International Journal of Trichology” Trichodaganomania involves biting one's hair and needs combined psychological and medical treatment.
75 citations
,
October 2010 in “Mammalian genome” Sphynx cats are hairless and Devon Rex cats have curly hair due to specific genetic mutations.
39 citations
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February 2011 in “American Journal of Dermatopathology” Onychomatricoma is a unique nail tumor that mimics the entire nail unit and is not related to other hair-related tumors.
17 citations
,
November 2012 in “Journal of Investigative Dermatology” The document concludes that over 500 genes are linked to hair disorders and this knowledge is important for creating new treatments.
13 citations
,
August 2005 in “Journal of Investigative Dermatology Symposium Proceedings” Mutations in the DSG4 gene cause fragile, sparse hair in humans, mice, and rats.
56 citations
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February 2012 in “Developmental biology” Sostdc1 controls the size and number of hair and mammary gland structures.
14 citations
,
March 1994 in “Archives of Dermatology” A married couple both developed alopecia areata, possibly due to shared stress.
4 citations
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September 1992 in “Journal of Small Animal Practice” A French bulldog had sparse hair due to a condition similar to that seen in Chinese crested dogs.
27 citations
,
May 2002 in “The Journal of Clinical Endocrinology & Metabolism” Brothers of women with PCOS tend to have higher levels of a hormone called DHEAS, indicating a possible genetic link.
4 citations
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March 2011 in “European Journal of Dermatology” Trauma can cause fat inflammation and abnormal hair growth.
12 citations
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March 2013 in “The American journal of dermatopathology/American journal of dermatopathology” Birt–Hogg–Dubé Syndrome requires genetic testing for accurate diagnosis due to its similarities with tuberous sclerosis.
January 2012 in “Case reports in pediatrics” A 16-year-old boy's arm hair grew more after wearing a splint, but it returned to normal in 8 months.
2 citations
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September 2022 The PER3 rs772027021 SNP may cause mild skin pigmentation changes in a new subtype of dyschromatosis universalis hereditaria.
2 citations
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August 2023 in “Development” Hair follicles in the back of the rosette fancy mouse have reversed orientations due to a gene mutation.
January 1983 in “Elsevier eBooks” Masculinization in affected individuals occurs gradually after puberty due to hormone changes.
9 citations
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February 2007 in “JAMA” PCOS is a common inherited condition causing cysts, irregular periods, and increased diabetes risk in women.
January 1999 in “American Journal of Medical Genetics Part A” The report expanded knowledge of MBTPS1-related disorders by identifying new symptoms.
8 citations
,
April 2016 in “Anais Brasileiros De Dermatologia” Right hand finger ratio may predict male hair loss.
94 citations
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April 2002 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” A new gene mutation causes female pseudohermaphroditism due to glucocorticoid resistance.
November 2022 in “Journal of the Endocrine Society” A 21-year-old male with a rare genetic disorder experienced sudden hair loss and high DHEAS levels, likely due to a condition similar to PCOS, usually seen in women.