29 citations
,
December 1998 in “Seminars in Cutaneous Medicine and Surgery” New treatments for hair loss show promise, especially finasteride for men and a stronger minoxidil formula.
3 citations
,
July 2011 in “Hair transplant forum international” Extra safety steps are needed for older patients and those with heart disease having hair restoration surgery.
93 citations
,
May 1990 in “The EMBO Journal” Mice with extra sheep genes had hair that fell out and regrew in cycles.
35 citations
,
January 2006 in “Cancer Research” Mice with extra PKCδ resist chemical-induced skin cancer but not UV-induced.
33 citations
,
January 2000 in “Acta Oto-Laryngologica” Epidermal growth factor increases extra hair cells in newborn rat ears.
15 citations
,
June 2020 in “The journal of investigative dermatology/Journal of investigative dermatology” Mice with extra human KLK14 had hair and skin problems, including weaker cell bonds and inflammation, linked to Netherton syndrome.
14 citations
,
May 2022 in “Cell Reports” Basal cell carcinomas need extra mutations to grow from small to large tumors.
5 citations
,
December 2018 in “Annals of plastic surgery” Some burn patients grew extra hair in areas treated with pressure garments or silicone.
5 citations
,
June 2014 in “Pediatric dermatology” A baby girl grew extra hair from contact with her grandfather's hair medicine, but it went away after stopping exposure.
5 citations
,
March 1981 in “PubMed” A girl grew extra hair in areas where she had insect bites.
4 citations
,
January 2011 in “Dermatology” A patient grew extra hair on their ears after treatment for testicular cancer, possibly due to hormonal changes or genetics.
3 citations
,
March 2018 in “Pediatric Dermatology” Two children grew extra hair from taking omeprazole, which went away after they stopped the medication.
December 2025 in “Pomeranian Journal of Life Sciences” A miner developed extra shoulder hair due to long-term work pressure and inflammation.
January 2025 in “JAAD International” Bicalutamide added no extra benefit over minoxidil alone for female-pattern hair loss.
15 citations
,
December 2019 in “Aesthetic Surgery Journal” Most insurance companies do not cover extra gender-affirming surgeries, with coverage being low and inconsistent.
15 citations
,
May 2011 in “Veterinary Dermatology” Vitamin A might be a safe extra treatment for dogs with sebaceous adenitis, but more research is needed to prove its effectiveness.
14 citations
,
January 1998 in “Dermatology” Polythelia pilosa is a type of extra breast tissue with hair and should be classified as such.
4 citations
,
January 2007 in “Indian Journal of Dermatology” Body hair can be used as an extra source of donor hair in hair restoration surgery for people with severe hair loss.
3 citations
,
May 2020 in “JAAD Case Reports” Two patients with psoriasis grew extra hair after using certain psoriasis medications.
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.
1 citations
,
December 1989 in “PubMed” Hair follicle cells can be grown without extra support and may help in wound healing.
Suprapubic hair can be used as an extra donor source for hair transplants when scalp hair is limited.
March 2026 in “Dermatopathology” A rare skin tumor with extra hair growth was found and safely removed from a 27-year-old woman.
A six-year-old girl with extra hair on her elbows was treated with hair removal methods.
March 2015 in “Oncology Times” Extending androgen suppression before radiotherapy offers no extra survival benefit for intermediate-risk prostate cancer.
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.
29 citations
,
January 2020 in “Frontiers in endocrinology” Fibrodysplasia ossificans progressiva is a rare genetic disorder that causes extra bone growth and symptoms of premature aging.
21 citations
,
January 2005 in “Pediatric Dermatology” An 8-year-old girl with vitiligo developed extra hair growth on her knee after using tacrolimus ointment.
10 citations
,
March 1990 in “The Journal of Dermatology” Long-term etretinate use may cause delayed wound healing and extra tissue growth after injury.
8 citations
,
September 2016 in “Pediatric dermatology” People with Mucopolysaccharidoses often have skin problems like thick skin and extra hair, and recognizing these can help diagnose and treat the condition early.