April 2023 in “Experimental Dermatology” Human dermal papilla cells can increase hair thickness and number in pigs with just one injection.
October 2024 in “Journal of the Endocrine Society” Rare ovarian tumors can cause hyperandrogenism, even if imaging appears normal.
April 2019 in “Journal of the Endocrine Society” A rare adrenal tumor in a woman only made DHEA-S, causing hair thinning, and was removed, fixing the hormone level.
32 citations
,
April 1994 in “Journal of the American Academy of Dermatology” High androgen levels and genetic factors likely cause Becker's nevus and related symptoms.
30 citations
,
October 1994 in “Journal of Cutaneous Pathology” Multiple perifollicular fibromas may actually be unrecognized cases of Birt-Hogg-Dubé syndrome.
October 2020 in “Journal of the American Society of Nephrology” Drospirenone can hide symptoms of certain hormonal disorders, complicating diagnosis.
21 citations
,
December 1997 in “The Journal of Dermatology” Thymectomy and high-dose prednisolone improved hair loss in a woman with alopecia areata.
44 citations
,
April 2013 in “Proceedings of the National Academy of Sciences of the United States of America” FGF13 gene changes cause excessive hair growth in a rare condition.
February 2021 in “PARIPEX INDIAN JOURNAL OF RESEARCH” Women with PCOS, especially if they are obese, are more likely to have an underactive thyroid than women without PCOS.
6 citations
,
January 2014 in “Clinical hemorheology and microcirculation” Hereditary elliptocytosis causes elongated red blood cells and can lead to mild or no symptoms.
7 citations
,
March 1993 in “International Journal of Oncology” Basal cell carcinoma shows keratin patterns similar to hair follicle structures.
61 citations
,
January 2002 in “American Journal of Clinical Dermatology”
March 2024 in “IP Indian journal of clinical and experimental dermatology” Giant solitary trichoepithelioma is a rare, usually non-cancerous hair follicle tumor that can sometimes turn into skin cancer.
7 citations
,
June 2015 in “The anatomical record” Hexi cashmere goats' hair growth varies by stage, with Hoxc13 linked to hair activity.
100 citations
,
November 1997 in “Human Genetics” A new mutation in the hHb1 keratin gene is linked to the hair disorder monilethrix.
26 citations
,
August 2014 in “Veterinary Dermatology” Sphynx cats have abnormal hair follicles and keratinization affecting their skin.
30 citations
,
October 2021 in “Scientific Reports” Inhibiting glycogen metabolism can promote hair growth.
7 citations
,
March 2003 in “PubMed” The scalp has a natural speckled pattern of increased pigment around hair follicles, possibly linked to local hormone production.
18 citations
,
January 1992 in “Dermatology” A 4-year-old girl has a rare condition causing hairlessness and skin bumps, but normal teeth and sweating.
2 citations
,
May 2011 in “International Journal of Dermatology” A 12-year-old boy in rural south India had a rare skin condition causing hair loss and inability to sweat.
April 2025 in “International Journal of Research in Dermatology” Thyroid disorders are linked to skin issues and autoimmune skin diseases.
January 2026 in “Indian Journal of Dermatopathology and Diagnostic Dermatology” Corkscrew hairs can help diagnose trichotillomania.
1 citations
,
January 2012 in “Journal of Toxicologic Pathology” A rat had a cyst similar to a hair follicle structure.
67 citations
,
February 2010 in “Acta Obstetricia et Gynecologica Scandinavica” Hirsutism is a strong sign of high male hormones and metabolic problems in women with PCOS, but acne and hair loss are not.
January 2020 in “Advanced ultrasound in diagnosis and therapy” Epidermoid cysts can be better diagnosed with ultrasound by recognizing specific features and using clinical information.
15 citations
,
January 1992 in “Dermatology” Artificial hair implants can cause severe skin problems, often needing surgical removal.
5 citations
,
August 2000 in “Archives of Pathology & Laboratory Medicine” The nodule on the woman's back was a benign hair follicle tumor, not cancer, but needed removal.
18 citations
,
April 2016 in “American Journal of Dermatopathology” Larger nail cavity sizes suggest benign tumors, while smaller ones may need further biopsy to rule out cancer.
January 2020 in “Medical journal of Dr. D.Y. Patil Vidyapeeth” Indian women with skin signs of high male hormones often have related health issues.
July 2001 in “Pediatrics in review” The girl's increased hair growth and other symptoms were due to a hormone-secreting ovarian tumor, which was successfully treated with surgery.