32 citations
,
August 2016 in “Journal of the American Academy of Dermatology” Temporal triangular alopecia is a non-scarring hair loss in children, often linked to other health conditions.
18 citations
,
May 2023 in “Science Advances” Activating the sonic hedgehog pathway in chicken embryos can permanently change scales to feathers.
25 citations
,
October 2005 in “PubMed” Keratin 19 expression in certain skin cells is temporary and not a reliable stem cell marker.
58 citations
,
October 2001 in “Dermatologic Clinics” Hair loss can indicate underlying systemic diseases and addressing these can sometimes reverse the hair loss.
January 2018 in “Springer eBooks” Trichotillomania is a condition where people repeatedly pull out their hair, which can be triggered by stress and has various physical signs.
25 citations
,
May 1972 in “Canadian journal of zoology” Black-tailed deer have four types of pelages and molt twice a year.
42 citations
,
September 2000 in “British Journal of Dermatology” Some children are born with unusually short, fine hair because their hair growth phase is short, but this often gets better by itself during puberty.
46 citations
,
November 2007 in “Gene Expression Patterns” Trps1 plays a key role in hair follicle development and cycling.
August 2019 in “Journal of The American Academy of Dermatology” RV3466F lotion significantly reduces hair loss and improves acute telogen effluvium.
6 citations
,
April 1996 in “Journal of histochemistry and cytochemistry/The journal of histochemistry and cytochemistry” TGF-alpha is present in sheep and ferret skin and may affect hair growth without directly stimulating cell proliferation.
July 2017 in “The American Journal of Cosmetic Surgery” A patient's hair loss after a browlift surgery improved on its own over 8 months.
February 2023 in “Journal of vaccines and immunology” Alopecia areata causes sudden hair loss, often on the scalp, and can be severe, especially with early onset or related health issues.
November 2025 in “International Journal of Recent Innovations in Medicine and Clinical Research” Understanding different types of hair loss helps in accurate diagnosis and treatment.
231 citations
,
October 1999 in “Journal of Clinical Investigation” Activating the Sonic hedgehog gene in mice can start the hair growth phase.
18 citations
,
October 1984 in “International Journal of Dermatology” Lithium therapy may cause temporary hair loss, with possible regrowth if treatment is stopped or continued.
October 2025 in “Diagnostics” Temporal triangular alopecia is a harmless, non-progressive hair loss condition.
6 citations
,
July 1975 in “Archives of Dermatology” Rapid weight loss from dieting and hormonal injections can cause significant hair loss in women.
39 citations
,
November 2009 in “Clinical and Experimental Dermatology” Immune privilege collapse in hair follicles may cause permanent hair loss in certain conditions.
September 1998 in “Journal of the European Academy of Dermatology and Venereology” Autoimmune and inflammatory processes are involved in both scarring and non-scarring types of hair loss.
January 1999 in “대한피부과학회지” Trichotillomania is more common in young females and often linked to stress and psychiatric conditions, with hair loss and increased catagen hair observed.
June 2023 in “JAAD case reports” The document concludes that "hot comb alopecia" is now called "central cicatricial centrifugal alopecia" and its causes are complex.
January 2023 in “Faculty of 1000 Research Ltd” Androgen loss may speed up hair greying.
January 2001 in “Nishi Nihon hifuka” The document concluded that there are differences in hair growth cycles and skin cell turnover rates, which can be measured with electronic equipment.
August 2021 in “Journal of Investigative Dermatology” Stress causes hair loss by making the body produce cortisol, which stops hair cells from growing.
1 citations
,
January 2024 in “Journal of Feline Medicine and Surgery Open Reports” Fluralaner topical spot-on successfully treated a cat's hair shedding and scales caused by Demodex gatoi.
19 citations
,
November 1985 in “Archives of Dermatology” The newborn's skin blisters healed without scarring, leaving some light spots, and stopped forming after four months.
December 2025 in “EXPERIMENTAL & CLINICAL MEDICINE GEORGIA” Brocq’s pseudopelade can cause patchy hair loss after childbirth.
31 citations
,
August 2000 in “Journal of Investigative Dermatology” Stem cells are key for hair follicle recovery.
8 citations
,
March 1990 in “Indian Journal of Dermatology Venereology and Leprology” Cutting matted hair stopped further hair loss caused by homemade shampoo.
June 2005 in “Journal of Investigative Dermatology” A bull with a gene mutation was asymptomatic, synthetic retinoids cause hair loss, and new therapeutic targets were identified for skin diseases.