Global, Regional, and National Burden of Alopecia Areata and its Associated Comorbidities, 1990-2021, and Projections to 2050: An Analysis of the Global Burden of Disease Study 2021.

Both age-standardized incidence and prevalence of AA observed an increasing trend during 1990–1993 (APC = 0.17); the rest showed decreasing trends ( Fig. 2 A , 2B ).

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From 1990–2021, age-standardized prevalence, incidence, and years lived with disability of alopecia areata globally show a decreasing trend, with females dominating.

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