14 citations
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January 2013 in “Journal of Cutaneous Medicine and Surgery” Some cancer treatments can cause permanent hair loss.
207 citations
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April 2006 in “Journal of The American Academy of Dermatology” Iron deficiency may be related to hair loss, but there's not enough evidence to recommend iron screening or supplements for all hair loss patients.
16 citations
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March 2017 in “Bone Marrow Transplantation” Some children who had stem cell transplants developed permanent hair loss, especially when treated with a drug called busulphan.
32 citations
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August 2019 in “Nature Communications” Chemotherapy causes permanent hair follicle damage by triggering stem cell loss.
2 citations
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June 2024 in “JAAD reviews.” Some drugs can cause permanent hair loss, though it's rare.