A 73-year-old woman's unusual hair loss and growth led to the discovery of a rare condition causing too much testosterone, which improved after her ovaries were removed.
13 citations
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February 2002 in “Archives of dermatology” A 32-year-old woman's hair loss was linked to skin nodules and severe headaches.
16 citations
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February 1978 in “Journal of steroid biochemistry/Journal of Steroid Biochemistry” Dihydrotestosterone specifically binds to hamster sebaceous glands, with a higher affinity than testosterone.
90 citations
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December 2008 in “Journal of Investigative Dermatology” Thyroid-stimulating hormone affects hair follicles but doesn't change hair growth or color.
5 citations
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February 2016 in “Sultan Qaboos University medical journal” The patient had a severe itchy rash and hair loss in the armpits.
305 citations
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February 2007 in “Hormone and metabolic research” Human skin makes sexual hormones that affect hair growth, skin health, and healing; too much can cause acne and hair loss, while treatments can manage these conditions.
48 citations
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July 1993 in “Archives of Dermatological Research” Merkel cells are abundant in facial vellus hair follicles, especially during the anagen phase.
33 citations
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October 2013 in “PloS one” Human sweat glands have a type of stem cell that can grow well and turn into different cell types.
5 citations
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February 2015 in “Journal of Comparative Pathology” High proliferative activity and peripheral invasion indicate malignancy in canine sebaceous gland tumors; the term 'epithelioma' should be updated for clarity.
29 citations
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September 1986 in “Journal of the American Veterinary Medical Association” The cat had a pituitary tumor causing hormone imbalance and related health issues.
January 2024 in “ACTA SCIENTIAE VETERINARIAE” An epidermoid cyst in a dog's mammary gland is rare and benign.
1 citations
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February 2017 in “Clinical Dermatology Open Access Journal” A rare benign tumor was found in a man's scrotum, highlighting the need for accurate diagnosis.
January 2008 in “Medical Entomology and Zoology”
69 citations
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August 1999 in “Developmental biology” The nude gene causes skin cell overgrowth and improper development, leading to hair and urinary issues.
April 2024 in “JCEM case reports” A woman's rare benign tumor that released both cortisol and testosterone was successfully removed, improving her health.
5 citations
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January 2010 in “The Journal of Internal Korean Medicine” Lygodium japonicum may help treat benign prostatic hyperplasia.
21 citations
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November 2017 in “Scientific Reports” Different human hair follicle stem cells grow at different rates and respond differently to a baldness-related compound.
3 citations
,
June 2001 in “Journal of Zoo and Wildlife Medicine” The lemur's testicular tumor was removed, improving its coat and behavior, with no signs of cancer spread.
77 citations
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July 2020 in “Cell” Muscles and nerves that cause goosebumps also help control hair growth.
1 citations
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February 2023 Thyroid disorders are common and affect health and quality of life, especially in women, highlighting the need for more awareness and iodine intake.
October 2025 in “Journal of the Endocrine Society” A rare pituitary tumor in an 18-year-old male caused hormonal issues and vision loss, requiring surgery and further treatment.
7 citations
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August 2008 in “Immunogenetics” A gene mutation in mice causes increased mast cells and disorganized hair follicles in their skin.
45 citations
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November 2015 in “Dermatologic Clinics” Hormones might affect the skin condition hidradenitis suppurativa, but their exact role is unclear.
Early balding may be a sign of future prostate problems.
June 2003 in “Obstetrical & Gynecological Survey” Examining more lymph nodes can improve survival rates in breast cancer patients without lymph node involvement.
112 citations
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January 2013 in “Experimental dermatology” Faulty Notch signalling may cause hair follicle changes and inflammation in hidradenitis suppurativa.
March 2024 in “Vestnik Rossijskogo universiteta družby narodov. Seriâ Agronomiâ i životnovodstvo” Wnt and Shh signaling are key in noggin-induced tumors, and blocking them can slow tumor growth.
July 2025 in “BMC Microbiology” Pancreatic cancer can alter gut and skin bacteria, possibly causing skin issues.
168 citations
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January 2005 in “Journal of Investigative Dermatology” Male and female mice have different skin thickness, and hormones affect their skin and hair growth differently.
Androgenetic alopecia, or hair loss, is caused by a mix of genetics, hormones, and environment, where testosterone affects hair growth and causes hair to become smaller and grow for a shorter time.