1 citations
,
July 2023 in “Cureus” A rare hair disorder with multiple hairs from one follicle was found on a patient's abdomen.
6 citations
,
January 2015 in “Indian Dermatology Online Journal” PEODDN is a rare skin disorder with limited treatment options, best treated with laser therapy.
5 citations
,
July 2005 in “British journal of dermatology/British journal of dermatology, Supplement” A man grew hair on his penis, which is not common, and needed surgery to remove it.
13 citations
,
June 2010 in “Journal of The American Academy of Dermatology” A man with Cronkhite-Canada syndrome had all 20 nails detach but improved with treatment.
January 2026 in “Cosmoderma” A 9-year-old girl has a rare hair disorder causing beaded, sparse hair.
116 citations
,
April 1986 in “The journal of cell biology/The Journal of cell biology” Trichohyalin is a protein in hair follicles that helps form hair filaments.
13 citations
,
January 2001 in “Pediatric dermatology” A dark-haired Chinese girl had hair that looked banded under certain light but was normal under a microscope.
90 citations
,
July 1993 in “Journal of Investigative Dermatology”
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.
36 citations
,
December 1991 in “Journal of Dermatological Science” Human nails contain both skin and hair keratins, each needing different extraction methods.
36 citations
,
July 1988 in “Archives of Dermatological Research” Pili annulati is caused by a protein metabolism disorder affecting hair structure.
September 1998 in “Journal of The European Academy of Dermatology and Venereology” Old people's nails often have problems due to body changes, more diseases, and self-care difficulties, affecting their movement and hand use.
January 2022 in “Clinical Cases in Dermatology” A woman's scalp nodule was a common, harmless pilar cyst, treated by surgical removal.
28 citations
,
January 2015 in “Journal of Cell Science” PINCH-1 is crucial for skin cell adhesion and movement, working with EPLIN and ILK.
6 citations
,
April 2024 in “Health Science Reports” Younger patients with severe alopecia areata often have nail problems.
68 citations
,
December 2010 in “The journal of investigative dermatology/Journal of investigative dermatology” HOXC13 is essential for hair and nail development by regulating Foxn1.
44 citations
,
July 1993 in “Journal of Investigative Dermatology”
September 2024 in “Cureus” A 10-year-old boy's nail condition is mainly cosmetic and improves over time with treatment.
January 2022 in “Journal of Skin and Stem Cell” Trichodynia is a painful scalp condition needing targeted treatments beyond symptom management.
74 citations
,
October 2012 in “The American Journal of Human Genetics” Mutations in the HOXC13 gene cause hair and nail development issues.
14 citations
,
June 2005 in “PubMed” A rare ear cyst contained hair fragments.
7 citations
,
January 1992 in “Acta Histochemica” Porcine and human pilosebaceous units are very similar.
48 citations
,
May 1991 in “The journal of investigative dermatology/Journal of investigative dermatology” Trichohyalin is also found in the outer layers of normal human skin.
Trichohyalin, a protein from pig tongue, was purified and found to have a filamentous structure.
139 citations
,
October 2005 in “Journal of Investigative Dermatology” The nail matrix has a reduced immune response, protecting it from autoimmunity.
40 citations
,
February 1994 in “Journal of Investigative Dermatology” 5 citations
,
June 2008 in “British Journal of Dermatology” 110 citations
,
January 1983 in “Brain Research Reviews” Monkey lips have dense sensory nerves similar to those in other skin areas, explaining their sensitivity.
23 citations
,
February 2004 in “British Journal of Dermatology” Keratin in mouse hair follicles is complex and plays specific roles.
9 citations
,
July 2019 in “Folia Morphologica” Brandt's hedgehog has thick skin on its back and many glands near its nostrils.