An Update on Alopecia Areata

    Liborka Kos, Joseph M. Conlon
    TLDR Alopecia areata is a common autoimmune disease affecting hair follicles, with unclear causes and a need for better treatments.
    Alopecia areata, a common autoimmune disease, had an unclear pathogenesis as of 2009. Research suggested that certain class II human leukocyte antigen alleles and the collapse of hair follicle immune privilege were key factors. Stress was also identified as a potential contributor. Despite these findings, the genetics and environmental factors involved remained uncertain, and there was a lack of quality evidence supporting the efficacy of existing treatments.
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