45 citations
,
December 2007 in “The FASEB journal” There are two types of stem cells in rodent hair follicles, each with different keratin proteins.
March 2019 in “Nasza Dermatologia Online” A rare scalp condition with hair loss was correctly diagnosed and treated, leading to hair regrowth.
2 citations
,
January 1975 in “Archives of Dermatological Research” Certain enzymes react strongly with some hormones in rat skin during hair growth, mainly in sebaceous glands and hair sheaths.
4 citations
,
April 1983 in “The Journal of Dermatology” A 15-year-old girl with hypothyroidism had excess hair and skin issues due to blocked hair follicles.
15 citations
,
June 1986 in “Pediatric Dermatology” Androgens increase pigmentation in young hamsters, but estrogens can reverse this effect.
19 citations
,
October 1996 in “International Journal of Dermatology” Pseudopelade is a rare inherited hair loss condition with a genetic cause.
6 citations
,
August 2022 in “Journal of Herbal Medicine” Mangosteen extract may help with hair growth and prevent graying.
7 citations
,
June 2020 in “Experimental dermatology” Researchers found that certain lipids, especially vitamin D3, are lower in prematurely grey hair than in pigmented hair.
31 citations
,
September 1996 in “Differentiation” The upper dermal sheath can regenerate hair in rats.
4 citations
,
January 2012 in “Springer eBooks” The document concludes that signs of male and female pattern baldness include uneven hair thickness, yellow spots, skin discoloration around hair follicles, more thin and soft hairs, and many hair follicles with just one hair.
39 citations
,
August 2005 in “Dermatologic surgery” Micropigmentation is a widely accepted tattooing technique for hiding cosmetic issues and medical uses, with permanent results and few side effects, but risks infection if not done with sterile tools.
January 2002 in “HAL (Le Centre pour la Communication Scientifique Directe)” The enzyme system in hair follicles is similar to the liver's and is inhibited by certain substances.
September 2024 in “Dermatology Reports” Sonidegib often causes hair loss, and LC-OCT helps identify early signs.
March 2024 in “Tissue and cell/Tissue & cell” Telomerase-positive cells are mainly in the bulb matrix and outer root sheath of hair follicles.
13 citations
,
January 2009 in “The Open Dermatology Journal” Oral pigmentation can be a sign of Addison's disease.
1 citations
,
September 2017 in “Journal of Pathology of Nepal” Testing hair roots with a special dye is a simple, non-invasive way to check disease progress in pemphigus vulgaris patients.
138 citations
,
June 2023 in “Molecules” Skin pigmentation varies due to genetics, UV exposure, and drugs, with treatments available but requiring medical advice.
June 2025 in “Australasian Journal of Dermatology” Pigmented rings with central clearing help diagnose melasma more accurately.
April 2017 in “Journal of Investigative Dermatology” Sweat glands and hair follicles are determined by opposing signals, with BMPs promoting sweat glands and blocking BMPs leading to hair follicles.
April 2017 in “Journal of Investigative Dermatology” Stem cells can create hair follicles, potentially treating permanent hair loss, and healthy skin and hair depend on mitochondrial function and special fats.
January 2007 in “Journal of the American Academy of Dermatology” A 73-year-old man's grey-white hair turned dark brown after eczema treatment.
Vogt–Koyanagi–Harada disease can cause rare hair growth on normally hairless thumb skin.
September 1998 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.
March 2012 in “Journal of The American Academy of Dermatology” Dermoscopy helps diagnose different hair loss conditions, and characteristics vary among ethnicities and individual cases.
15 citations
,
July 2016 in “Biochemical Journal” Wnt proteins from certain skin cells are crucial for normal hair growth and renewal.
21 citations
,
April 2000 in “Journal of Cutaneous Pathology” The hamartoma is an abnormal hair growth with limited development in the upper hair follicle.
41 citations
,
January 2014 in “Annals of Dermatology” Dermoscopic examination helps diagnose different types of hair loss conditions by showing specific patterns.
41 citations
,
June 2010 in “Journal of Investigative Dermatology” New cells are added to the hair's dermal papilla during the active growth phase.
77 citations
,
April 1968 in “Development” Excess vitamin A can cause hair follicles to change into gland-like structures.
4 citations
,
August 2017 in “International journal of molecular sciences” The conclusion is that Pigmented Epithelioid Melanocytoma can start from hair follicle stem cells or from a mole on the skin.