PD is a multifactorial disorder influenced by a combination of genetic, environmental, and lifestyle factors. While the exact cause of Parkinson's disease remains unclear, several risk factors have been identified that may increase an individual's likelihood of developing the condition. Advancing age is the most significant risk factor for PD. The incidence of PD increases with age, with the majority of cases diagnosed in individuals over the age of 60. However, PD can also occur in younger adults, known as early-onset or young-onset PD.