January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
May 2025 in “Dermatology Reports” A genetic mutation in the LIPH gene causes a rare hair disorder with sparse, curly hair.
115 citations
,
September 2005 in “International Journal of Dermatology” Different ethnic groups have unique hair growth patterns, with African hair growing slower and less dense, Asian hair growing fast but sparse, and Caucasian hair being densest; men are more likely to experience hair loss than women.
11 citations
,
September 2010 in “American Journal of Medical Genetics - Part A” A Turkish family with sparse hair and eyebrow loss has a mutation in the U2HR gene linked to Marie Unna hereditary hypotrichosis.
4 citations
,
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.
2 citations
,
January 2000 in “Journal of Toxicologic Pathology” A single recessive gene causes sparse hair in certain Japanese White rabbits.
7 citations
,
August 2019 in “Clinical and Experimental Dermatology” The Mona Lisa's high forehead and sparse eyebrows might be due to a hair loss condition or Renaissance fashion trends, but the actual reason is unknown.
44 citations
,
August 2004 in “Journal of Investigative Dermatology” A gene deletion in DSG4 causes sparse hair in some Pakistani families.
21 citations
,
April 2004 in “Australasian Journal of Dermatology” A 3-year-old girl has a rare condition causing sparse hair and nail issues, with minimal improvement from treatment.
8 citations
,
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” A boy's skin fragility and sparse hair were caused by a genetic mutation affecting skin cell adhesion.
February 2024 in “Frontiers in physics” The new model detects hair clusters more accurately and efficiently, helping with early hair loss treatment and diagnosis.
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.
February 2023 in “Cosmoderma” Loose anagen hair syndrome causes easily shed hair but usually improves with time.
57 citations
,
August 2002 in “American Journal Of Pathology” Cathepsin L deficiency causes hair and skin issues in mice.
48 citations
,
January 2012 in “The journal of investigative dermatology/Journal of investigative dermatology” Chemokine signaling is important for hair development.
25 citations
,
October 1996 in “Dermatologic Clinics” Loose Anagen Syndrome causes easy-to-pull, thin hair, mainly in young girls, and improves with age.
11 citations
,
January 2018 in “Springer eBooks” The book helps surgeons improve hair transplants for Asian patients.
October 2021 in “Dermatology practical & conceptual” A Saudi girl was diagnosed with Loose Anagen Hair Syndrome, a rare condition causing easy hair loss without scarring.
December 1990 in “Indian Journal of Dermatology Venereology and Leprology” Topical minoxidil and hair dye can improve hair density and appearance in congenital hypotrichosis.
1 citations
,
January 2013 in “Nasza Dermatologia Online” Vitamin B12 deficiency can cause reversible hair color loss in children.
194 citations
,
November 2006 in “Science” A genetic mutation in the LIPH gene causes hair loss and growth defects.
August 2025 in “Journal of Cosmetic Dermatology” 5% topical minoxidil can significantly improve hair growth in children with Marie Unna hereditary hypotrichosis.
January 2012 in “International Journal of Trichology” Two siblings have a rare genetic condition causing curly, coarse hair.
15 citations
,
January 1992 in “Dermatology” Artificial hair implants can cause severe skin problems, often needing surgical removal.
11 citations
,
October 2007 in “Journal of Investigative Dermatology” Mutations in the Sgk3 gene cause fuzzy hair in mice.
10 citations
,
January 2010 in “Springer eBooks” Asian hair restoration surgery requires different methods due to the unique characteristics of Asian hair, such as its sparseness and coarseness.
8 citations
,
March 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” The near-naked hairless mutation causes hair loss but is not due to a mutation in the hairless gene itself.
December 2025 in “Frontiers in Medicine” ARWH is a rare hair disorder with no cure, but potential treatments include minoxidil and other therapies.
20 citations
,
July 2005 in “Experimental dermatology” The fuzzy gene is crucial for controlling hair growth cycles.
17 citations
,
June 2011 in “The journal of investigative dermatology/Journal of investigative dermatology” The G60S Connexin43 mutation causes hair growth issues and poor hair quality in mice, similar to human ODDD patients.