January 2026 in “American Journal of Medical Genetics Part A” A new genetic variant causes trichothiodystrophy in two brothers, but their mother may carry it without showing symptoms.
35 citations
,
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.
5 citations
,
August 2012 in “Archives of Dermatology” The immune system can cause permanent skin and hair whitening by attacking pigment cells.
38 citations
,
September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
10 citations
,
November 2008 in “Veterinary Dermatology” The mouse hairy ears mutation causes longer ear hair due to changes in gene expression.
5 citations
,
September 2015 in “Nepalese journal of ophthalmology” An 11-year-old girl with a rare skin disorder also had cornea issues and dry eye, needing careful management.
November 2022 in “Journal of Investigative Dermatology” Blocking mTORC1 activity could increase hair pigmentation and potentially reverse greying.
Hair can naturally regain color, and stress might influence greying and its reversal.
28 citations
,
January 2012 in “Biological & pharmaceutical bulletin” Hairless protein can both repress and activate vitamin D receptor functions, affecting gene regulation.
27 citations
,
January 2000 in “Developmental Dynamics” Mutations in the Whn gene affect hair keratin gene expression differently.
January 2007 in “Revista del Centro Dermatológico Pascua” A 2-year-old boy was diagnosed with a rare genetic condition causing fragile hair, intellectual issues, and short stature.
November 2024 in “JAAD Case Reports” A 21-month-old boy has a rare genetic disorder causing sparse hair due to an LSS gene mutation.
April 2008 in “Expert review of dermatology” Mutations in the P2RY5 gene cause hereditary woolly hair.
January 2014 in “Reactions Weekly” A woman experienced unusual hair loss and skin reactions after taking phenobarbital, but her hair grew back after treatment.
3 citations
,
January 2019 in “Jikken doubutsu ihou/Jikken doubutsu/Experimental animals/Jikken Dobutsu” Pigs without the Hairless gene showed skin and thymus changes, useful for studying human hair disorders.
5 citations
,
April 2014 in “International Journal of Pediatric Endocrinology” Prepubertal girls with hypertrichosis have more sensitive androgen receptors, leading to increased body hair growth.
89 citations
,
August 2008 in “Human genetics” The EDAR gene greatly affects hair thickness in Asian populations.
December 2025 in “Skin Appendage Disorders” Stress may cause sudden hair whitening in children.
11 citations
,
January 2015 in “Journal of cellular physiology” HR protein causes abnormal hair cycles by increasing Tgf-β2 and reducing miR-31.
215 citations
,
September 2003 in “Journal of Biological Chemistry” Vitamin D receptor and hairless protein are essential for hair growth.
Hair can naturally regain color after greying, and this change may be linked to stress levels.
June 2025 in “British Journal of Dermatology” Topical minoxidil may help improve hair growth in rare congenital hypotrichosis.
January 2024 in “Pediatric Dermatology” Minoxidil improved hair growth in a child with a rare genetic disorder.
August 2004 in “Veterinary Dermatology” Adult-onset hair loss in Chesapeake Bay retrievers may be linked to abnormal adrenal hormone production.
November 2013 in “Institutional Repositories DataBase (IRDB)” Gamma-ray exposure during hair rest phase harms hair growth and color in mice.
11 citations
,
February 1989 in “Journal of veterinary medicine. Series A” Crossbreeding certain European cattle breeds may cause hair and physical issues in cattle.
18 citations
,
February 2012 in “Experimental Dermatology” No link found between specific genes and female pattern hair loss.
6 citations
,
March 2016 in “PLoS ONE” The patient's hair was thinner and had fewer lipids due to a genetic mutation.
1 citations
,
January 2020 in “Indian journal of dermatology, venereology, and leprology” CD117 and platelet-derived growth factor receptor α may play a role in alopecia areata.
2 citations
,
September 2016 in “Journal of Dermatological Science” Reduced TRPS1 leads to increased STAT3 and SOX9 in hair follicles, affecting hair growth.