Global, regional, and national burden of headache disorders, 1990-2021, and projections to 2050: a comprehensive analysis of the global burden of disease study 2021.

Introduction: Headache disorders, including migraines and tension-type headaches, are prevalent and debilitating conditions that affect millions of people worldwide. And this analysis aims to inform evidence-based interventions and policies for alleviating the burden of headache disorders on individuals and societies. Methods: We analyzed headache data from the Global Burden of Disease Study 2021 report, examining the prevalence, incidence, and disability-adjusted life years across 204 countries and territories over 32 years. The data were stratified according to age, sex, year, geographical region, and socio-demographic Index (SDI). We employed the estimated average percentage change calculation to assess the temporal trends of these indicators. A detailed analysis of health inequities was conducted using decomposition analysis, the pyramid model, slope index, and concentration index. The Bayesian Age-Period-Cohort model was used to forecast the disease burden over the next 26 years. Results: By 2021, the global incidence of headache disorders was estimated to be 809.2 million, with tension-type headaches being the most prevalent. Age-standardized incidence rates, prevalence rates, and DALYs have exhibited an overall upward trend since 1990. The health inequality analysis revealed a diminishing disparity in the burden of headache disorders across countries with varying SDI scores. Predictions indicate a continuous increase in headache disorders, potentially reaching over 3.5 billion by 2050 based on current trends. Conclusion: The burden of headache disorders is increasing, with important implications for global health and the economy. The rising predictions highlight the potential need for targeted public health strategies and interventions.