November 2020 in “International journal of contemporary pediatrics” Two siblings had a rare immune disorder caused by a FOXN1 gene mutation.
11 citations
,
November 1991 in “Journal of Neuropathology & Experimental Neurology” Brindled mice show abnormal catecholamine neuron development due to copper deficiency.
January 1990 in “Advances in forensic haemogenetics” Human hair protein patterns are inherited genetically.
13 citations
,
July 2004 in “Pediatric dermatology” A new severe form of monilethrix syndrome includes hair loss, scalp itching, cataracts, and distinct facial features.
July 2022 in “L Endocrinologo” A 77-year-old woman with hair loss had high testosterone and 17OH-progesterone levels, but no significant findings on imaging.
January 2023 in “Open Journal of Endocrine and Metabolic Diseases” Hyperandrogenism is a common hormonal disorder in women, often linked to PCOS.
22 citations
,
March 1994 in “Journal of Heredity” A mutation in mice causes hair loss and immune problems.
5 citations
,
December 2017 in “The Journal of Dermatology” A new gene mutation caused a man's rare skin condition, Schöpf-Schulz-Passarge syndrome.
September 2016 in “Journal of Dermatological Science” Björnstad syndrome causes twisted hair from birth.
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.
October 2024 in “Journal of the Endocrine Society” Leydig cell tumors can cause high testosterone and symptoms in postmenopausal women, and removing them improves symptoms.
38 citations
,
May 2006 in “Archives of Gynecology and Obstetrics” Women with only irregular periods or excess hair have a better hormone profile than those with full PCOS, but both groups are similar, indicating a need for better PCOS diagnosis methods.
May 2019 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” July 2025 in “Journal of Investigative Dermatology” Androgens reduce THY1 in skin cells, leading to less fat, more fibrosis, and worse healing in males.
February 2025 in “Skin Appendage Disorders” Adrenal tumors can cause hair loss and high testosterone in women.
7 citations
,
September 2022 in “Communications biology” Omega-6 fats in certain cells boost male hormone production.
10 citations
,
January 2003 in “Dermatology” The E413K mutation in the hHb6 gene causes monilethrix, a hair disorder, but doesn't show consistent symptoms.
8 citations
,
March 2010 in “Gynecological Endocrinology” Free Testosterone Index, bioavailable testosterone, and androstenedione are the most accurate for diagnosing excess male hormones in PCOS.
1 citations
,
September 2020 in “Journal of the Endocrine Society” Men have worse COVID-19 outcomes than women due to genetic and hormonal differences.
15 citations
,
January 1987 in “Electrophoresis” Human head hair proteins can be typed into eight distinct patterns, useful for genetic and forensic investigations.
20 citations
,
July 2005 in “Experimental dermatology” The fuzzy gene is crucial for controlling hair growth cycles.
49 citations
,
June 2019 in “eLife” Ancient DNA blocks are still present in human genomes, possibly due to advantages they provide.
May 2025 in “Frontiers in Genetics” A new genetic variant in the LIPH gene causes hair growth issues in a Chinese patient.
A rare genetic mutation causes severe immune issues, hair loss, and nail problems.
2 citations
,
September 1997 in “Archives of Dermatology”
13 citations
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June 2010 in “Journal of The American Academy of Dermatology” A man with Cronkhite-Canada syndrome had all 20 nails detach but improved with treatment.
February 2012 in “Reactions Weekly” A woman got male pattern baldness from touching her husband's testosterone gel.
57 citations
,
October 2013 in “international journal of endocrinology and metabolism” Female pattern hair loss is common, linked to polycystic ovarian syndrome, and treated with topical Minoxidil.
3 citations
,
April 2012 in “Bioinformation” Two specific SNPs in the TRPS1 gene cause excessive hair growth by altering the protein's structure.
17 citations
,
December 2020 in “Journal of Genetic Counseling” Genetic counselors should be culturally skilled and aware of transgender patients' unique health risks and needs.