Background: There is a lack of enough evidence regarding the epidemiology of Young-onset Parkinson's disease (YOPD) which is needed by clinicians and healthcare policymakers.
Aim: Herein, in this systematic review and meta-analysis, we aimed to estimate the global prevalence and incidence rates of YOPD.
Methods: We searched the literature in PubMed, Scopus, and Web of Science in May 2022.