March 2003 in “中華皮膚科醫學雜誌” Trichothiodystrophy causes unusual hair and developmental issues.
140 citations
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August 2010 in “Pigment Cell & Melanoma Research” We know a lot about mouse hair color, but not much about human hair color differences.
September 2019 in “Journal of Investigative Dermatology” PCE-DP brightens skin and promotes hair growth by enhancing cell growth and reducing melanin uptake.
January 2011 in “대한피부과학회지” A 7-year-old girl was diagnosed with trichothiodystrophy due to low sulfur levels in her hair.
January 1992 in “Journal of Oriental Neuropsychiatry” People with schizophrenia have lower zinc, copper, and chromium in their hair.
December 1997 in “Journal of The European Academy of Dermatology and Venereology” Most women with excessive hair growth have a hormonal cause.
October 2023 in “The American Journal of Gastroenterology” Cronkhite-Canada syndrome is rare, with high mortality and cancer risk, needing more research for treatment guidelines.
January 2026 in “JCEM Case Reports” Benign conditions can mimic serious ones in postmenopausal hyperandrogenism, requiring careful diagnosis.
1 citations
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November 2019 in “International Journal of Women's Dermatology” Ketoconazole shampoo can cause rare pink hair discoloration.
10 citations
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July 2022 in “Dermatology and Therapy” Melasma's causes include genetics, sun exposure, hormones, and oxidative stress, and understanding these can help create better treatments.
1 citations
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January 2018 in “International Journal of Trichology” Circle hairs are harmless, spiral-shaped body hairs that don't need medical treatment.
August 2025 in “Journal of Cosmetic Dermatology” Topical treatments and lasers can improve axillary hyperpigmentation, but no best method is established yet.
1 citations
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August 2012 in “Journal der Deutschen Dermatologischen Gesellschaft” A woman's hyperandrogenism was caused by a genetic mutation leading to non-classic adrenogenital syndrome.
Hair turning darker can be a sign of skin cancer.
December 2022 in “Gastroenterology” A man with Cronkhite-Canada syndrome improved significantly with immunosuppressive therapy.
21 citations
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June 1991 in “Journal of Inherited Metabolic Disease” Selenium deficiency caused symptoms in a child, which improved with selenium supplements.
April 2019 in “Journal of the Endocrine Society” Bilateral ovarian hyperthecosis is a rare but treatable cause of increased facial hair in postmenopausal women.
24 citations
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May 2019 in “PLOS genetics” Mutations in the HEPHL1 gene cause abnormal hair and cognitive issues.
53 citations
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October 1984 in “Endocrine reviews” Excessive hair growth in women often has no known cause and is not linked to race or other hormonal symptoms.
January 2026 in “Forum Dermatologicum” Skin symptoms often reveal hormonal imbalances in PCOS.
July 1989 in “British Journal of Dermatology” Long-term use of canthaxanthin may cause reversible changes in the eye, including crystal deposits and altered vision responses.
January 1984 in “Isotopenpraxis Isotopes in Environmental and Health Studies” Trace element levels in hair differ in people with thyroid diseases.
Hirsutism is excessive male-pattern hair growth in women, often treated cosmetically or with hormone therapy if contraception is also desired.
27 citations
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January 1995 Melanin in black hair protects it from sun damage better than light-brown hair.
5 citations
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October 2012 in “Veterinary Pathology” A Doberman Pinscher had a rare form of autoimmune disease causing hair loss and other severe symptoms.
November 2025 in “World Journal of Biology Pharmacy and Health Sciences” Premature greying in kids can signal health issues like vitamin deficiencies or thyroid problems, which can be treated.
5 citations
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July 2014 in “Journal of X-Ray Science and Technology” Hair analysis can help diagnose cell ion channel activity and calcium deficiency.
1 citations
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September 2019 in “Journal of cosmetic dermatology” Lead and selenium levels don't cause premature graying.
10 citations
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August 2012 in “Current Problems in Pediatric and Adolescent Health Care” Hair changes can indicate systemic diseases or medication effects.
4 citations
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January 2016 in “Dermatology online journal” Using bacitracin zinc and selenium sulfide one after the other can temporarily turn white hair yellow.