May 2021 in “British Small Animal Veterinary Association eBooks” If a dog's skin tests are normal but it has hair loss, consider other non-endocrine causes and choose tests based on the hair loss pattern.
February 2020 in “Definitions” Telogen Effluvium is a condition where more hair than usual falls out after stress or fever.
128 citations
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October 2011 in “Development” Activating a protein called β-catenin in adult skin can make it behave like young skin, potentially helping with skin aging and hair loss.
94 citations
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August 1975 in “Journal of Cutaneous Pathology” Male pattern baldness involves smaller hair follicles, larger oil glands, and other tissue changes, but not major blood supply issues.
12 citations
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March 2021 in “Regenerative Engineering and Translational Medicine” Exosomes from stem cells might help treat hair loss.
5 citations
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March 2001 in “Journal of biomechanics” Growing hairs are easier to pull out than resting hairs due to different anchorage strengths.
2 citations
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August 2012 in “Cell Stem Cell” The study showed that some hair follicle stem cells wake up to grow hair while others stay asleep, and that the environment around them is important for hair growth.
1 citations
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April 2018 in “Our Dermatology Online” Massaging the scalp with a cosmetic containing certain natural inhibitors can significantly regrow hair in men with pattern baldness.
February 2026 in “Brazilian Journal of Implantology and Health Sciences” Chronic stress and high cortisol levels can cause hair loss by disrupting hair growth.
November 2023 in “Journal of Drug Delivery Science and Technology” Exosomes may help stimulate hair growth and improve hair loss conditions like androgenic alopecia.
April 2023 in “Voprosy kurortologii fizioterapii i lechebnoĭ fizicheskoĭ kultury” COVID-19 may cause hair loss, often after recovery, with androgenetic alopecia being the most common type.
October 2021 in “Research Square (Research Square)” Melatonin affects certain genes and pathways involved in cashmere goat hair growth.
January 2020 in “Nihon rinsho hifukaikai zasshi” A woman's temporary hair loss was caused by high prolactin levels from her medication.
January 2014 in “Surgical and Cosmetic Dermatology” Nutritional supplements can significantly reduce hair loss in telogen effluvium after three months.
April 2012 in “Informa Healthcare eBooks” The document concludes that diagnosing hair loss requires evaluating multiple histological features, as no single feature is definitive on its own.
January 2025 in “Arquivo Brasileiro de Medicina Veterinária e Zootecnia” Agoutis in captivity have more resting (telogen) hairs than growing (anagen) hairs, regardless of season or gender.
122 citations
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April 1995 in “Journal of Cutaneous Pathology” The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.
45 citations
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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.
September 2021 in “CRC Press eBooks” Telogen effluvium is a type of hair loss that happens when stress or illness causes many hairs to enter the resting phase and fall out.
January 2008 in “Acta Anatomica Sinica” Minoxidil promotes hair growth by delaying the hair's resting phase.
5 citations
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August 2015 in “Bioscience, Biotechnology, and Biochemistry” Obese mice with a leptin gene mutation have a longer resting phase in their hair cycle, which may help understand certain hair loss conditions.
19 citations
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November 2001 in “Journal of Investigative Dermatology Symposium Proceedings” Human hair follicles can regenerate and recover after severe injury by going through a brief abnormal resting phase before growing again.
8 citations
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February 2017 in “Archives of Dermatological Research” Intense pulsed light treatment effectively reduces underarm hair by making hair follicles smaller and extending their resting phase.
April 2024 in “Biomedicine & pharmacotherapy” Pilose antler extract helps hair grow in mice with a type of hair loss by speeding up the growth phase.
211 citations
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October 2001 in “The FASEB Journal” Noggin is necessary to start the hair growth phase in skin after birth.
16 citations
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January 1998 in “Dermatology” Androgens may worsen a natural hair resting phase, possibly leading to hair loss.
35 citations
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December 2014 in “Lasers in surgery and medicine” Red light promotes hair growth by directly stimulating hair cells and improving cell communication.
12 citations
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July 1964 in “Archives of Dermatology” Selenium sulfide shampoo doesn't affect hair growth or rest phases.
January 2011 in “China Animal Husbandry & Veterinary Medicine” Constant-release melatonin reduces SOX21 gene expression in goats during the hair follicle resting phase.
13 citations
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March 2018 in “Pediatric Dermatology” Children with short anagen syndrome usually see their hair condition improve as they get older.