July 2024 in “Journal of Investigative Dermatology” Allergic contact dermatitis may promote hair growth by activating hair follicle stem cells.
April 2007 in “Linchuang pifuke zazhi” TGF-β1 and 2 may play a role in hair loss in AGA.
June 2023 in “Research Square (Research Square)” Different immune responses cause hair loss in scalp diseases, with unique patterns in scalp psoriasis possibly protecting against hair loss.
April 2023 in “Journal of Investigative Dermatology” EGFR helps protect hair follicles from bacterial infections.
3 citations
,
July 2013 in “Journal of Cutaneous Pathology” A woman's hair loss, resembling an autoimmune condition, improved after treatment, but requires ongoing checks due to potential serious associations.
March 2017 in “The American Journal of Cosmetic Surgery” Transplanted hair follicles can resist hair loss from an autoimmune condition better than natural hair.
8 citations
,
November 2017 in “PubMed” New research suggests treating hair loss should focus on common inflammation rather than individual molecules.
January 2022 in “Stem cell biology and regenerative medicine” The document concludes that hair follicle regeneration involves various factors like stem cells, noncoding dsRNA, lymphatic vessels, growth factors, minoxidil, exosomes, and induced pluripotent stem cells.
April 2023 in “Journal of Investigative Dermatology” The study found that aging hair follicle stem cells change behavior, leading to hair loss, but drugs targeting these cells may help restore hair growth.
47 citations
,
December 2011 in “Experimental Dermatology” CGRP may help protect hair follicles from immune system attacks, potentially slowing hair loss.
January 2023 in “Figshare” Minor skin injuries can boost hair growth by increasing TNF-α.
45 citations
,
October 2009 in “Dermatology” Half of the patients treated with a specific drug for skin cancer experienced hair loss not related to the drug's dosage.
13 citations
,
August 1991 in “The Journal of the American Osteopathic Association” Inflammation may play a role in causing androgenetic alopecia.
8 citations
,
July 1986 in “International Journal of Dermatology” Eruptive vellus hair cysts are harmless skin bumps that may go away on their own.
8 citations
,
April 1979 in “Journal of Cutaneous Pathology” Giant cells found in some male pattern baldness cases may help diagnose it and suggest hair is mistakenly seen as foreign by the body.
June 2013 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” FGF9 from certain cells can trigger new hair growth during wound healing, but humans have fewer of these cells, which may limit hair regrowth.
550 citations
,
December 2005 in “The Journal of clinical investigation/The journal of clinical investigation” Researchers successfully isolated and identified key markers of stem cell-enriched human hair follicle bulge cells.
September 2016 in “Journal of Dermatological Science” Certain factors can start hair growth in adult skin by making cells communicate and form new hair follicles.
26 citations
,
March 1987 in “Journal of the American Academy of Dermatology” Minoxidil helps hair regrowth by stimulating hair follicles and reducing immune responses.
108 citations
,
July 2004 in “American Journal of Pathology” Stress increases a factor in mice that leads to hair loss, and blocking this factor may prevent it.
November 2023 in “Journal of Investigative Dermatology” γδTregs can protect hair follicles from alopecia areata and may help regrow hair.
1 citations
,
January 2022 in “Clinical dermatology review” A young man's cheek papule was identified as a benign hair follicle tumor using a skin surface microscope.
33 citations
,
March 2013 in “Journal of Investigative Dermatology” Human hair follicle stem cells show signs of low oxygen levels, which may be important for hair growth and preventing baldness.
October 2025 in “Dermatologic Surgery” Twisted hair follicles can survive transplantation as well as intact ones.
1 citations
,
October 2024 in “Indian Dermatology Online Journal” PRP injections for hair loss may cause scalp nodules that can persist but often regress on their own.
April 2023 in “The journal of investigative dermatology/Journal of investigative dermatology” Removing certain immune cells in mice causes their hair to enter the growth phase earlier than usual.
35 citations
,
November 2010 in “Journal of Cutaneous Pathology” Dilated follicular infundibula and increased catagen/telogen follicles are key indicators for diagnosing alopecia areata.
15 citations
,
December 1972 in “Journal of Investigative Dermatology”
December 2025 in “Russian Journal of Skin and Venereal Diseases” Thinner hair follicle structures are linked to non-scar alopecia.
March 2019 in “Our Dermatology Online” A woman with severe hair loss regrew mostly white hair after treatment.