Alopecia areata is an autoimmune disorder characterized by reversible hair loss without loss of the hair follicle. This PrimeView focuses on the clinical presentation, which can vary from patchy hair loss on the scalp to total loss of all body hair.
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Alopecia areata. Nat Rev Dis Primers 3, 17012 (2017). https://doi.org/10.1038/nrdp.2017.12