January 2015 in “Annals of dermatology/Annals of Dermatology” Using travoprost for glaucoma may cause extra hair growth and darker skin around the eyes, but these effects can reverse after stopping the drug.
January 2012 in “Case reports in pediatrics” A 16-year-old boy's arm hair grew more after wearing a splint, but it returned to normal in 8 months.
March 1983 in “International Journal of Dermatology” Minoxidil can cause excessive hair growth.
April 1999 in “Therapeutische Umschau” Hair loss and excessive growth treated with various options, including new laser technology.
44 citations,
January 1997 in “British Journal of Dermatology” 
38 citations,
July 1998 in “Journal of surgical oncology” A woman with breast cancer developed a rare condition causing excessive fine hair growth on her face and body.
26 citations,
April 2007 in “Journal of clinical oncology” 
20 citations,
March 1994 in “Clinical and Experimental Dermatology” Too much topical minoxidil can cause excessive hair growth, but stopping treatment reverses it.
5 citations,
October 2012 in “The Journal of Dermatology” Traumatic panniculitis can cause increased hair growth in affected areas.
4 citations,
August 2004 in “The Journal of Dermatology” Healing psoriatic plaques can cause unexpected hair growth.
3 citations,
January 2016 in “Case reports in dermatological medicine” An 80-year-old man grew extra hair on his forearms after starting Alzheimer's medication rivastigmine.
3 citations,
April 2012 in “Bioinformation” Two specific SNPs in the TRPS1 gene cause excessive hair growth by altering the protein's structure.
Isotretinoin may cause temporary, reversible facial hair growth in some women.
April 2023 in “Pediatric Dermatology” A 1-year-old boy developed excessive hair growth from exposure to a hair growth treatment.
61 citations,
January 2002 in “American Journal of Clinical Dermatology” 5 citations,
December 2018 in “Annals of plastic surgery” Some burn patients grew extra hair in areas treated with pressure garments or silicone.
2 citations,
March 2016 in “Serbian Journal of Dermatology and Venerology” A six-year-old boy with excessive hair growth and other symptoms may have a genetic link on chromosome 17q, requiring regular medical follow-ups.
1 citations,
January 2013 in “Indian journal of dermatology, venereology, and leprology” A girl inherited excessive body hair from her mother and grandmother.
April 2017 in “The journal of investigative dermatology/Journal of investigative dermatology” A girl with excessive hair growth had a genetic change on chromosome 17 that reduced the activity of two genes linked to hair growth.
March 2022 in “Journal of The European Academy of Dermatology and Venereology” September 1998 in “Journal of the European Academy of Dermatology and Venereology” March 2022 in “Journal of The American Academy of Dermatology” 
45 citations,
January 1981 in “Annals of Internal Medicine” Minoxidil controls blood pressure effectively, but may cause side effects like hypertrichosis.
39 citations,
February 2021 in “Journal of The American Academy of Dermatology” Low-dose oral minoxidil safely treats hair loss, with hypertrichosis as main side effect.
19 citations,
June 2020 in “International Journal of Dermatology” Low-dose oral minoxidil effectively treats non-scarring hair loss with some side effects like hypertrichosis and postural hypotension.
7 citations,
November 2020 in “Journal of The American Academy of Dermatology” Low-dose oral minoxidil may cause side effects like hypertrichosis and is not suitable for everyone.
147 citations,
April 1994 in “Drug Safety” Some drugs can cause hair loss or increase hair growth, but these effects are usually reversible when the drug is stopped.
145 citations,
November 2017 in “Journal of The European Academy of Dermatology and Venereology” Use minoxidil for hair loss treatment; assess results after 6 months.
109 citations,
December 1998 in “The Journal of Dermatology” Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.
103 citations,
April 2005 in “Experimental dermatology” Prostaglandin F2alpha and related compounds can increase hair growth and darken hair in mice.