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May 2012 in “Annals of Oncology” Some breast cancer chemotherapy can cause permanent hair loss.
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June 1990 in “British Journal of Dermatology” Systemic retinoids are effective for psoriasis but have side effects; benefits may outweigh risks, especially when reducing cancer risks from other treatments.
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January 2011 in “Photodermatology, photoimmunology & photomedicine” This therapy effectively treats resistant alopecia areata with minimal side effects.