January 2021 in “Nasza Dermatologia Online” Plica polonica is a rare condition where hair becomes irreversibly tangled, and the treatment is to cut the matted hair.
March 2021 in “CRC Press eBooks” The document concludes that different patterns of hair thickness and scalp changes can help diagnose types of non-scarring hair loss.
578 citations
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April 1993 in “Cell” TGFα gene mutation in mice causes abnormal skin, wavy hair, curly whiskers, and sometimes eye inflammation.
92 citations
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April 2009 in “Journal of Investigative Dermatology” The Celsr1 gene is crucial for normal hair patterning in mice.
December 2023 in “Modern engineering and innovative technologies” 33 citations
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September 1987 in “American Journal of Medical Genetics” Uncombable hair is inherited dominantly with complete penetrance.
2 citations
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September 2020 in “Hair transplant forum international” A new tool makes hair transplant surgeries faster by creating multiple cuts in one go.
8 citations
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October 2024 in “Developmental Cell” 9 citations
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July 2007 in “Circulation Research” Defects in certain proteins cause major heart abnormalities during early development.
130 citations
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May 1988 in “Journal of The American Academy of Dermatology” "Male-pattern" hair loss is common in women, especially after menopause, and doesn't always mean there's a problem with hormone balance.
Dermoscopy is useful for diagnosing hair loss patterns in dogs.
5 citations
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March 2009 in “Pediatric Dermatology” The study found that pili bifurcati causes hair to intermittently split into two branches, each with its own outer layer.
January 2024 in “Journal of Cosmetic Dermatology” Men's and women's pattern hair loss progress differently, with men showing more hair thinning and women having more widespread hair loss.
37 citations
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June 2000 in “Experimental dermatology” The Lanceolate hair-J mutation in mice mimics human hair disorders like Netherton's syndrome.
8 citations
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December 2017 in “Small Ruminant Research” Variation in the TCHH gene affects wool curliness in sheep.
6 citations
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October 2019 in “Case Reports in Dermatology” The document concludes that treatment can improve hair growth and symptoms in Fibrosing Alopecia in a Pattern Distribution.
October 2023 in “Case Reports” A man with a new type of male pattern hair loss that affects the back of the head responded well to common hair loss treatments.
September 2024 in “Genes” Genes affect pig hair patterns, aiding better breeding.
January 2022 in “Clinical Cases in Dermatology” A 47-year-old man was diagnosed with a specific type of hair loss and advised to use certain medications and avoid hair transplants.
4 citations
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February 2025 in “BMC Genomics” Black wool in Qira sheep is linked to specific gene mutations, especially in the TYRP1 gene.
9 citations
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November 2004 in “SKINmed Dermatology for the Clinician” A man with hair loss developed a condition causing scarring and inflammation in both bald and non-bald areas of his scalp.
January 2009 in “The Year book of dermatology” Ludwig pattern hair loss results from varying androgen sensitivity, causing fewer thick hairs and more thin hairs.
Dark hair with a red beard likely evolved for camouflage, not attraction.
1 citations
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July 2021 in “Aesthetic Plastic Surgery” The new triangular flag-shaped design for incisions in hair transplant surgery provides better hair alignment and cosmetic appearance without extra scarring, especially for patients with specific hair directions.
May 2022 in “Zenodo (CERN European Organization for Nuclear Research)”
11 citations
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November 2005 in “The Journal of Dermatology” A man's crushed thumb caused unusual horizontal nail ridges on all fingers of one hand.
28 citations
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April 2009 in “Annals of laboratory medicine” The dense fine speckled pattern in ANA tests is common in autoimmune diseases, challenging previous beliefs that it was unrelated.
13 citations
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October 2008 in “PubMed” Japanese women's curved hair has an uneven internal structure and varying amino acid composition.
September 2025 in “Journal of the American Academy of Dermatology” Female pattern hair loss may indicate metabolic issues and increased cardiovascular risk.
The curly mutation in SELH/Bc mice affects hair and may help study human genetic disorders.