Prevalence of Parkinson's disease in Lagos, Southwestern Nigeria: a descriptive community-based study from the Transforming Parkinson's Care in Africa (TraPCAf) project.

Background The global burden of Parkinson's disease (PD) has increased substantially over recent decades, driven by population ageing and rising age-standardized prevalence. In Africa, accurate estimates remain limited due to a lack of recent, methodologically robust population-based studies. Objectives To determine the current age-standardized and sex-specific prevalence rates of PD in Nigeria. Methods We conducted a 2-stage, cross-sectional population-based door-to-door survey among adults aged [≥]18 years in two densely populated urban local government areas in Lagos State, Nigeria, between April 1, 2024 and January 31, 2025. The first stage involved a household census and screening for