December 2015 in “Journal of Neurology and Stroke” A man had a stroke after getting a scalp injection for hair loss.
A woman had temporary hair loss due to stress from a spinal cord injury.
The document concludes that severe trauma can cause temporary hair loss, known as Telogen Effluvium, which usually resolves without treatment.
April 2026 in “Reviews in Medical Virology” Trichodysplasia spinulosa is a rare skin condition linked to weakened immune systems, mostly in organ transplant patients.
A new microneedle patch effectively treats hair loss by delivering growth factors to the skin.
November 2022 in “Journal of the Endocrine Society” A transman experienced lasting virilization symptoms after stopping testosterone, which were resolved with estradiol treatment.
Stress can cause hair loss and trigger autoimmunity by damaging hair follicle cells.
September 2025 in “Journal of International Medical Research” Chlorine gas exposure can cause long-term skin issues.
June 1989 in “Diseases of the Colon & Rectum” Some patients experience temporary hair loss after ulcerative colitis surgery, likely due to illness rather than the surgery itself, and it usually grows back within six months.
August 2024 in “Skin Research and Technology” PRP is an effective and safe treatment for female hair loss.
April 2016 in “Journal of Investigative Dermatology” Blocking Oncostatin M's role in the JAK-STAT pathway can stimulate hair growth in mice.
January 2009 in “The Year book of dermatology” Ludwig pattern hair loss results from varying androgen sensitivity, causing fewer thick hairs and more thin hairs.
72 citations
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July 2012 in “Journal of Investigative Dermatology” Mice lacking a key DNA methylation enzyme in skin cells have a lower chance of activating stem cells necessary for hair growth, leading to progressive hair loss.
51 citations
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October 2002 in “British Journal of Dermatology” Finasteride increases hair density in female androgenetic alopecia, but individual results may vary.
4 citations
,
July 2005 in “International Journal of Dermatology” Topical PUVA and tacrolimus ointment can effectively and safely treat infant alopecia universalis.
4 citations
,
January 2019 in “Annals of dermatology/Annals of Dermatology” Changing hairstyles can help hair regrow in children with hair loss from tight braids or ponytails.
78 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” TGF-β1 from dermal papilla cells suppresses hair growth, and targeting it may help treat androgenetic alopecia.
11 citations
,
January 2002 in “Dermatologic Surgery” Using minoxidil before and after facelift surgery can effectively prevent temporary hair loss without causing other complications.
April 2016 in “Actas Dermo-Sifiliográficas” The document concludes that a unique target-like hair regrowth pattern in alopecia areata may be more common than thought and should be properly identified.
1 citations
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November 2024 in “Cutis” PLLA injections can cause hair loss and skin issues.
Poly-L-lactic acid injections can cause hair loss and skin issues.
39 citations
,
December 2001 in “JNCI: Journal of the National Cancer Institute” Using a gene therapy with the Sonic Hedgehog gene helps mice regrow hair faster after losing it from chemotherapy.
36 citations
,
June 2014 in “International Journal of Dermatology” Dutasteride helps hair growth in those unresponsive to finasteride, but may cause more sexual dysfunction.
36 citations
,
November 2005 in “Journal of The American Academy of Dermatology” Topical latanoprost doesn't effectively regrow hair in severe eyebrow alopecia areata cases.
33 citations
,
April 2012 in “British Journal of Dermatology” Damaged hair follicle stem cells can cause permanent hair loss, but understanding their role could lead to new treatments.
27 citations
,
January 2002 in “Exogenous Dermatology” Chronic exposure to sunlight may worsen male pattern baldness and protecting the scalp from the sun could slow it down.
23 citations
,
December 2010 in “Journal of Dermatology” Finasteride helps hair loss patients' quality of life.
21 citations
,
November 2009 in “Dermatologic Clinics” The document suggests that certain protein deficiencies and scalp blistering in Epidermolysis Bullosa may cause hair loss.
18 citations
,
May 2017 in “Experimental Dermatology” AMT may cause hair loss and changing dWAT activity could help treat it.
12 citations
,
January 2016 in “Skin appendage disorders” Repeated botulinum toxin injections for forehead wrinkles may cause hairline recession in some women.