10 citations
,
January 2011 in “Annals of Dermatology” A rare scalp tumor involving two hair follicles was successfully removed with surgery, with no recurrence after 7 months.
12 citations
,
January 1991 in “Acta Dermato Venereologica” Basal cell epithelioma-like changes are most similar to normal basal cells.
April 2020 in “International journal of research in dermatology” An 8-year-old girl has a rare, irreversible hair loss condition caused by a genetic mutation.
10 citations
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July 2001 in “PubMed” A new type of pachyonychia congenita may exist, caused by a different keratin mutation.
72 citations
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July 1984 in “Journal of Investigative Dermatology”
January 2022 in “Dermatology Review” EGFR inhibitors can cause unusual localized hair growth.
1 citations
,
January 2009 in “Elsevier eBooks” Combining proper shaving, topical treatments, and laser therapy effectively reduces Pseudofolliculitis Barbae.
40 citations
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February 1994 in “Journal of Investigative Dermatology” 1 citations
,
April 2018 in “Turkish Journal of Dermatology” Childhood hypertrichosis is excessive hair growth not linked to hormones, with types based on location and origin.
29 citations
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July 2003 in “Experimental Dermatology” The upper hair follicle is stable, while the lower part allows movement during hair growth.
December 2012 in “Expert review of dermatology” New findings suggest the protein linked to Birt–Hogg–Dubé syndrome is important in cell signaling and could affect treatment understanding.
April 1977 in “Pediatric Research”
June 2021 in “bioRxiv (Cold Spring Harbor Laboratory)” KIF18B is important for correctly positioning cell division machinery in skin cells, affecting hair follicle development.
19 citations
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May 2007 in “Dermatologic therapy” The document concludes that various treatments, including laser therapy, are effective for managing pseudofolliculitis barbae, especially in darker skin types.
8 citations
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September 1981 in “Zentralblatt für Veterinärmedizin Reihe A” Biotin deficiency in pigs causes hair loss, skin issues, and weak claws.
April 2017 in “Journal of Investigative Dermatology” Certain mutations in the KLHL24 gene cause a skin disorder by breaking down an important skin protein.
February 2024 in “Journal of Dermatological Science” Curved hair can develop when hair cells merge abnormally during growth.
2 citations
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January 2020 in “Clinical Dermatology Review” Idiopathic hirsutism is the most common cause of hirsutism in women, followed by PCOS.
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.
53 citations
,
August 2015 in “The Italian Journal of Pediatrics/Italian journal of pediatrics” Excessive body hair can signal complex health issues.
September 2025 in “British Journal of Dermatology” 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.
16 citations
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June 2015 in “The journal of investigative dermatology/Journal of investigative dermatology” The enzyme DHHC13 is essential for healthy hair and skin, and its deficiency leads to hair loss and skin problems.
2 citations
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November 2006 in “Pump Industry Analyst” Pilomatricomas don't follow the usual hair follicle cell differentiation process.
43 citations
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August 1994 in “Journal of Investigative Dermatology” 5 citations
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July 2009 in “Clinical and experimental dermatology”
April 2022 in “Our Dermatology Online” A woman had unusual hair growth on one side of her chin without a known cause.
May 2020 in “International journal of dermatology and venereology” Hair matrix cysts are rare skin nodules with unique features, often needing surgical removal.
36 citations
,
December 2004 in “British Journal of Dermatology” The cyst had unusual keratin spherules and resembled bone marrow.