January 2011 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” Bald men with male pattern baldness still have hair stem cells, but lack certain cells needed for hair growth.
21 citations
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January 2009 in “Indian journal of dermatology, venereology, and leprology” Vitamin B12, folate, ferritin, and iron levels are not linked to alopecia areata.
August 2023 in “Tzu Chi Medical Journal” Iron deficiency is the main cause of hair loss in women, and iron supplements started within 6 months can improve hair health.
93 citations
,
May 2010 in “European Journal of Cancer” BI 2536 had limited effectiveness against several advanced cancers and caused significant side effects.
1 citations
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March 1991 in “PubMed” Naevoid bundle hair is an unusual hair growth pattern where multiple hairs fuse together.
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.
7 citations
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May 2018 in “Curēus” Bimatoprost 0.03% solution effectively promotes eyebrow growth.
September 2023 in “Journal of the American Academy of Dermatology” Sunscreen use is linked to frontal fibrosing alopecia, especially in males.
5 citations
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February 2016 in “Genetic Testing and Molecular Biomarkers” Hair loss is significantly linked to lower levels of certain genes in hair follicles.
13 citations
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March 2012 in “The Journal of Dermatology” Hair transplant surgery can rebuild muscle and nerve connections, allowing transplanted hairs to stand up like normal hairs.
2 citations
,
November 2007 in “Journal of Investigative Dermatology” Fluocinolone acetonide slows down hair follicle stem cells but speeds up skin cell growth in mice.
9 citations
,
November 2004 in “SKINmed Dermatology for the Clinician” A man with hair loss developed a condition causing scarring and inflammation in both bald and non-bald areas of his scalp.
4 citations
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May 2009 in “Wound Repair and Regeneration” Genetically modified cells can regenerate skin and hair in rats.
January 2026 in “SSRN Electronic Journal” July 2010 in “PharmacoEconomics & Outcomes News” January 2024 in “Acta dermato-venereologica” February 2023 in “Reactions Weekly” March 2023 in “Archives of Physical Medicine and Rehabilitation” Testosterone plus finasteride increases bone density in men with spinal cord injuries.
Melanocytes can regenerate around hair follicles in bullous pemphigoid, especially in patients with darker skin.
July 1985 in “American pharmacy” Minoxidil can effectively increase hair growth in early male pattern baldness.
May 2026 in “Reactions Weekly” 
13 citations
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January 2019 in “Skin appendage disorders” FAPD is a possible diagnosis for hair loss in patients of color and requires multiple evaluations for accurate diagnosis.
10 citations
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March 2016 in “Journal of The American Academy of Dermatology” Antiandrogenic drugs could be a good treatment option for frontal fibrosing alopecia.
January 2012 in “Yearbook of Dermatology and Dermatologic Surgery” Taking finasteride daily can effectively and safely increase hair density and thickness for women with hair loss.
16 citations
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August 2023 in “JAAD Case Reports” JAK inhibitors, like ruxolitinib, may effectively treat frontal fibrosing alopecia.
June 2015 in “Reactions weekly” December 2012 in “Reactions weekly” 3 citations
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January 2016 in “Dermatology online journal” Some people with lichen planus pigmentosus might later develop frontal fibrosing alopecia.
September 2022 in “Journal of the American Academy of Dermatology” The registry showed that tofacitinib is promising for treating hair loss in children with alopecia areata, but more research is needed.