Urticaria in China: Incidence, Prevalence, and Disability-adjusted Life Years Compared with G20 Countries: Findings from the Global Burden of Disease Study 2021
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Urticaria has become a major public health challenge in China, yet comprehensive national data assessments are lacking. This study analyzes the burden of urticaria in China compared to G20 countries from 1990 to 2021. Using data from the Global Burden of Diseases, Injuries, and Risk Factors Study (GBD) 2021, we examined the incidence, prevalence, and disability-adjusted life years (DALYs) of urticaria by age and sex in China. Temporal trends were assessed using Average Annual Percent Change (AAPC) estimates. We also decomposed the changes in new cases, patient numbers, and urticaria burden in G20 countries and globally from 1990 to 2021. In 2021, China reported 17.30 million (95% uncertainty interval, 15.37-19.25) new cases of urticaria, 9.87 million (8.72-10.99) existing cases of urticaria, and 0.59 million (0.39-0.82) DALYs due to urticaria, ranking second among G20 countries. These metrics peaked in females under 5 years old. Age-standardized rates in China were lower than the global average and remained stable from 1990 to 2021. The under-5 age group showed the fastest growth in prevalence and DALY rates. The number of urticaria patients increased by 8.52%, with population growth contributing 19.86%, aging - 11.31%, and age-specific prevalence - 0.03%. Despite stable age-standardized rates, the absolute burden of urticaria in China has risen, particularly among females under 5 years old, highlighting the need for targeted public health interventions. Improving public emergency awareness and response is critical for urticaria patients, who may develop severe systemic diseases and fatal allergic symptoms.