January 2020 in “Przegla̧d dermatologiczny” A 5-year-old boy was diagnosed with congenital triangular alopecia, a type of hair loss without skin changes, usually starting between ages 2-5, with no specific treatment.
86 citations
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August 2000 in “Pigment cell research” Melanocyte activity in hair follicles is linked to the hair growth cycle, being active in growth phases and inactive in rest phases.
67 citations
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May 2010 in “Journal of The American Academy of Dermatology” Some chemotherapy can cause permanent hair loss.
4 citations
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September 2017 in “Skin appendage disorders” The dog with an Alopecia Areata-like condition showed signs of an autoimmune disease and partially regrew hair without treatment, suggesting dogs could be models for human AA research.
6 citations
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January 1994 in “Skin Pharmacology and Physiology” Dermal papillae are crucial for hair growth and follicle development.
4 citations
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February 2020 in “Journal of Cosmetic Dermatology” Trichoscopy helps diagnose hairline recession causes in Egyptian women, with androgenetic alopecia being the most common.
August 2023 in “British journal of dermatology/British journal of dermatology, Supplement” Rubbing or pressing on the face can cause small bumps, and changing posture along with certain creams can improve them.
December 2023 in “International Journal of Dermatology” Accurate diagnosis of alopecia areata incognito requires trichoscopy and histopathology.
4 citations
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January 2020 in “Dermatology Online Journal” Congenital atrichia with papular lesions causes permanent hair loss and skin bumps due to a gene mutation.
September 2016 in “Journal of Dermatology and Dermatologic Surgery” A woman's severe hair loss was caused by scalp psoriasis, not the initially thought condition, and treatment improved her psoriasis but couldn't restore her lost hair.
3 citations
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January 2018 in “Dermatology” Scalp biopsies help tell apart androgenetic alopecia and alopecia areata.
71 citations
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January 1998 in “Pathobiology” The document concludes that certain rats and mice are useful for studying hair loss in humans and testing treatments.
2 citations
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January 2022 in “Actas Dermo-Sifiliográficas” Dermoscopy can effectively identify Malassezia folliculitis.
July 2020 in “bioRxiv (Cold Spring Harbor Laboratory)” Neutrophil extracellular traps slow down hair follicle healing after injury.
June 2020 in “Journal of Investigative Dermatology” Certain bacteria can enhance skin regeneration.
91 citations
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May 1972 in “Journal of Biological Chemistry” Transglutaminases work through a ping-pong mechanism, and human plasma and platelet transglutaminases have similar catalytic subunits.
April 2017 in “Australasian Journal of Dermatology” Most patients with Lichen planopilaris improved with acitretin, but treatments often didn't work well; preventing infection in skin surgery is important, and bupivacaine might be a better anesthetic.
3 citations
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July 2019 in “Journal of Cosmetic Dermatology” New shampoo with tyramine hydrochloride reduces hair loss by making a small muscle in the hair follicle contract.
24 citations
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August 2020 in “AJGP” A woman's sudden hair loss was linked to her previous COVID-19 infection.
7 citations
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January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” T-cell reconstitution after thymus transplantation can cause hair whitening and loss.
August 2024 in “Nutrients” Probiotics help reduce hair loss and increase hair growth in people with androgenic alopecia.
April 2012 in “Informa Healthcare eBooks” Syphilitic alopecia is a rare hair loss condition in secondary syphilis that looks similar to another condition but can be diagnosed with specific tests and responds to antibiotics.
February 2023 in “Cosmoderma” An infant with complete hair loss was diagnosed with a genetic disorder affecting hair growth.
16 citations
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February 1999 in “American Journal of Dermatopathology” Lymphocytes may hinder hair stem cells, causing hair loss without scarring.
January 2018 in “Journal of The American Academy of Dermatology” A manual blood cell counter was effectively used to count hair follicles during surgery, being user-friendly and cost-effective but limited by a three-digit display.
8 citations
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June 2012 in “Australasian Journal of Dermatology” A rare form of alopecia causes hair thinning without bald spots and may be more common than thought, responding well to steroid treatment.
November 2025 in “Pediatric Dermatology” The boy's hair fully regrew after treatment for a rare hair loss condition.
7 citations
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June 2004 in “Dermatologic Surgery” A new hair transplant method combines individual and group follicles for better results and efficiency.
18 citations
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March 2009 in “Experimental Dermatology” Pilomatricoma can develop into various hair-related structures.
September 2025 in “PubMed” Regenerative hair transplant improves hair growth and quality using stem cells.