January 2021 in “Dermatology online journal” One twin girl has Loose anagen syndrome with poorly anchored hair, diagnosed with a simple hair pull test, while her identical twin does not have the condition.
32 citations
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November 2020 in “UNC Libraries” A point mutation in the androgen receptor gene causes complete androgen insensitivity.
195 citations
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May 2003 in “Obstetrics and gynecology (New York. 1953. Online)/Obstetrics and gynecology” Most women with excess hair growth have an underlying hormonal issue, often treated with medication and hair removal methods.
37 citations
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January 2009 in “Sexual Development” Fadrozole and Finasteride change frog sex ratios and cause intersex animals with altered gene expressions.
September 2025 in “Cureus” 19.5% of young college girls have PCOS, highlighting the need for early screening and intervention.
September 2025 in “Biology of Sex Differences” Females have a higher lifetime risk of alopecia areata than males.
Androgenetic alopecia is more common in male Chinese adolescents and linked to rosacea, but doesn't affect quality of life.
28 citations
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October 2017 in “Journal of the American Academy of Dermatology” Pediatric alopecia areata is rare, affecting more girls than boys, and peaks at ages 9-12.
30 citations
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November 2013 in “PLOS ONE” Androgen receptor signaling causes early aging of cells important for hair growth by damaging their DNA.
124 citations
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July 1997 in “Journal of Biological Chemistry” Overexpressing a specific enzyme in mice causes hair loss and female infertility.
14 citations
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July 2015 in “Journal of Cosmetic Dermatology” Sebaceous glands in male pattern hair loss patients have more lobules and might cause early hair growth phase shifts.
48 citations
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May 2012 in “Journal of Midwifery & Women's Health” Polycystic Ovary Syndrome is common but often undiagnosed, and early treatment is important to prevent health problems.
January 1995 in “Adolescent and pediatric gynecology” Mutations in the androgen receptor gene cause different levels of androgen insensitivity, making it hard to create simple tests for the condition.
January 2012 in “Guangdong Medical Journal” Family history affects onset and severity of androgenic alopecia, but treatment success depends more on therapy duration.
January 2022 in “Open Access Macedonian Journal of Medical Sciences” A 5-year-old boy with alopecia totalis had temporary hair regrowth with treatment but relapsed, highlighting the need for thorough investigation and holistic care.
May 2025 in “Journal of the ASEAN Federation of Endocrine Societies” Surgical removal of an adrenal tumor resolved hormonal issues in a young woman.
February 2025 in “Folia Medica” Low vitamin D levels may be linked to early hair loss in males.
10 citations
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November 2008 in “Veterinary Dermatology” The mouse hairy ears mutation causes longer ear hair due to changes in gene expression.
9 citations
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November 2013 in “Gynecological Endocrinology” A woman had high testosterone due to an ovarian issue, which was fixed with surgery.
6 citations
,
October 2014 in “Endokrynologia Polska” Excessive hair growth is much more common in Chinese women with PCOS than in the general population.
39 citations
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September 2018 in “American Journal of Medical Genetics Part A” A new genetic mutation in the ODC1 gene causes developmental delay and other symptoms in a young girl.
January 2012 in “International Journal of Trichology” Two siblings have a rare genetic condition causing curly, coarse hair.
115 citations
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September 2000 in “The Lancet” Early hair loss may indicate risk of insulin resistance.
11 citations
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November 2022 in “Journal of Endocrinological Investigation” Hormonal treatments can change hair and skin in transgender people, but may not fully achieve desired results.
January 2008 in “대한피부과학회지” Androgenetic alopecia is more common in men, linked to genetics and androgen levels, but routine pelvic ultrasound isn't recommended.
November 2023 in “International Journal of Trichology” Alopecia areata may be linked to kidney issues, but more research is needed.
2 citations
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January 2014 in “Journal of Integrated Health Sciences” Obesity is strongly linked to the severity of hirsutism in women.
1 citations
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January 2023 88 citations
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September 2003 in “Clinical endocrinology” Hormone treatment for transsexual individuals is effective but carries risks like thromboembolic events and mood changes, with most side effects being minor and reversible.
March 2012 in “Journal of Pediatric and Adolescent Gynecology” Doctors vary in how they initially test for PCOS, but most agree on using oral contraceptives and lifestyle changes as first treatments.