May 2026 in “Annals of Internal Medicine Clinical Cases” Leydig cell tumors can cause hormone issues in postmenopausal women even if imaging looks normal.
14 citations
,
August 2004 in “Veterinary Dermatology” The horse had a rare type of hair loss caused by immune cells attacking hair follicles.
July 2025 in “Journal of Investigative Dermatology” Immune system changes may contribute to female pattern hair loss.
January 2026 in “Journal of Radiation Research” 53BP1 focus analysis in hair cells can help estimate radiation doses.
5 citations
,
March 2015 in “Clinical and Experimental Dermatology” Chemotherapy caused a woman's permanent hair loss and early menopause.
1 citations
,
February 2022 in “Case reports in endocrinology” An unusual growth of Leydig cells in a woman's ovaries caused her excessive hair growth, which was treated successfully with surgery.
December 2025 in “Russian Journal of Skin and Venereal Diseases” Hair follicles are thinner in alopecia patients, especially in alopecia areata.
22 citations
,
February 2002 in “Journal of theoretical biology” The model showed that randomness accurately describes individual hair growth cycles and that synchronization can cause large fluctuations not seen in humans.
December 2021 in “Pathologica” Trichogerminoma is a rare, benign skin tumor from hair cells, with a small risk of becoming cancerous.
46 citations
,
November 2014 in “Journal of Cutaneous Pathology” Recognizing diverse presentations of folliculotropic mycosis fungoides is crucial to avoid diagnostic errors.
January 2011 in “Bradford Scholars (University of Bradford)” Testosterone stimulates growth in intermediate hair follicles, but this can be blocked by cyproterone acetate.
28 citations
,
March 2010 in “Histochemistry and Cell Biology” Different markers are found in stem cells of the scalp's hair follicle bulge and the surrounding skin.
April 2018 in “Journal of Investigative Dermatology” Differentiated fibroblasts regenerate hair follicles better than undifferentiated ones.
8 citations
,
June 2012 in “Australasian Journal of Dermatology” A rare form of alopecia causes hair thinning without bald spots and may be more common than thought, responding well to steroid treatment.
2 citations
,
January 2017 in “Przegla̧d dermatologiczny” Two trichoscopic patterns found in hair loss: diffuse fibrotic and androgenetic alopecia, affecting treatment choice and regrowth chances.
1 citations
,
September 2023 in “Portuguese Journal of Dermatology and Venereology” Trichoscopy can help diagnose and decide when to biopsy folliculotropic mycosis fungoides.
40 citations
,
January 2013 in “International journal of trichology” Perifollicular erythema can indicate active frontal fibrosing alopecia.
51 citations
,
May 1984 in “Journal of the American Academy of Dermatology” Benign follicular mucinosis involves immune cells attacking hair follicles.
26 citations
,
May 2001 in “British Journal of Dermatology” Pilomatrixomas likely originate from the hair matrix due to changes in hair keratin expression.
4 citations
,
January 2014 in “The Journal of urology/The journal of urology” Kidney cancer cells without folliculin are more sensitive to radiation due to increased self-eating cell death.
April 2023 in “Journal of Investigative Dermatology” The research found that certain factors in hair follicle cells control hair growth and development, and these could be used to create new treatments for hair loss.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.
Fgf20 helps form hair follicle structures by stopping cell division and increasing cell movement.
14 citations
,
July 2004 in “Australasian Journal of Dermatology” Follicular mycosis fungoides can look like a B-cell lymphoma, making diagnosis difficult.
69 citations
,
September 2006 in “Human Reproduction” Women with PCOS have fewer activated T cells in their ovarian follicles, which might affect fertility.
23 citations
,
July 1997 in “British Journal of Dermatology” The inner root sheath is vital for hair follicle stability during growth changes.
76 citations
,
October 2000 in “Journal of the American Academy of Dermatology” Follicular mucinosis can be an early sign of aggressive mycosis fungoides.
1 citations
,
January 2018 in “Journal of Cosmetics Dermatological Sciences and Applications” A targetoid hair regrowth pattern indicates recovery in alopecia areata.
53 citations
,
September 2011 Other common signs, not just the well-known immune cells around hair bulbs, are important for diagnosing hair loss from alopecia areata.
40 citations
,
November 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Different melanocyte types in hair follicles either survive or die during the catagen phase.