September 2021 in “CRC Press eBooks” Alopecia areata incognita causes sudden hair thinning, responds well to steroids, and is more common in those with genetic hair loss conditions.
January 2019 in “International Journal of Trichology” A woman lost all her hair in one day, was diagnosed with a rare type of hair loss, and regrew it in 12 weeks with treatment.
April 2023 in “Clinical dermatology review” COVID-19 infection may cause hair loss.
44 citations
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January 2021 in “Dermatologic Therapy” COVID-19 may cause hair loss due to infection stress or treatments.
23 citations
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April 2006 in “Skin Research and Technology” The study concluded that a special imaging technique showed women with hair loss have slower hair growth and a faulty hair replacement cycle.
59 citations
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January 2002 in “Dermatology” A new type of sudden, complete female hair loss was found, with most patients fully recovering within 6 months without needing steroid treatment.
40 citations
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November 2005 in “The journal of investigative dermatology/Journal of investigative dermatology” Different melanocyte types in hair follicles either survive or die during the catagen phase.
1 citations
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September 2003 in “Praxis” Hair loss is a significant challenge with psychological effects, but treatments like minoxidil and finasteride are effective.
March 2014 in “Journal of The American Academy of Dermatology” Vitamin D deficiency is common in temporary hair loss, and stress is often a suspected cause.
September 2021 in “CRC Press eBooks” Traumatic alopecia causes hair loss from pulling or rubbing, leading to broken hairs and changes in the scalp.
28 citations
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January 2021 in “Skin appendage disorders” COVID-19 may cause early hair loss similar to classic temporary hair loss, with further research needed.
To prevent wool loss in sheep, provide balanced nutrition and reduce stress.
161 citations
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June 1994 in “The journal of investigative dermatology/Journal of investigative dermatology” Hair stops producing melanin as it transitions from the growth phase to the resting phase.
3 citations
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April 2021 in “Revista da Sociedade Portuguesa de Dermatologia e Venereologia” Some people who got COVID-19 experienced temporary hair loss starting around 10 weeks after infection, with many seeing improvement within about 25 days.
June 2023 in “Benha Journal of Applied Sciences” People with chronic hair shedding have lower antioxidant levels in their blood compared to healthy individuals.
July 2026 in “Bratislavské lekárske listy/Bratislava medical journal” Addressing certain behaviors in telogen effluvium patients can improve management and reduce costs.
September 2025 in “bioRxiv (Cold Spring Harbor Laboratory)” Non-invasive methods can effectively monitor hair growth cycles, aiding hair loss treatment development.
38 citations
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September 1997 in “The journal of investigative dermatology/Journal of investigative dermatology” A mutation in mice causes hair loss and skin issues due to a defect in a gene affecting cell adhesion.
October 2024 in “Annals of Allergy Asthma & Immunology” Anaphylaxis from cow's milk allergy can cause temporary hair loss in children.
124 citations
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August 1994 in “Journal of Investigative Dermatology” Dexamethasone speeds up hair loss in mice, while cyclosporin A slows it down.
September 2022 in “Journal of Case Reports and Medical History” Many new moms lose hair after childbirth due to hormonal changes, but it usually grows back within a year.
68 citations
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April 1965 in “General and Comparative Endocrinology” The pituitary gland controls seasonal fur color changes in weasels.
2 citations
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August 2020 in “Dermatologic Therapy” Low ferritin and zinc levels, as well as anemia, are linked to more severe hair loss in Egyptian children with chronic hair shedding.
1 citations
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August 2020 The Shaven mutation in mice affects hair growth and causes a greasy coat due to abnormal lipid content.
1 citations
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April 2016 in “Journal of The American Academy of Dermatology” The study concludes that Loose Anagen Hair Syndrome is a benign condition that usually improves with age but can be hard to diagnose and stressful for the family.
51 citations
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May 1996 in “American journal of physiology. Regulatory, integrative and comparative physiology/American journal of physiology. Regulatory, integrative, and comparative physiology” Gray seals use more energy and have higher hormone levels during their annual fur-shedding period.
92 citations
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June 2005 in “Journal of Investigative Dermatology” All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.
2 citations
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October 2023 in “Aesthetic Plastic Surgery” Females, especially over 40, are more likely to experience temporary hair loss after hair restoration surgery.
Many severe COVID-19 patients experienced temporary hair loss, but most regrew hair within six months.
November 2024 in “Huisarts en Wetenschap” Telogen effluvium hair loss often resolves on its own in 3 to 6 months, but see a dermatologist if it persists.