been ranked second after Alzheimer's disease worldwide. Early diagnosis of PD is crucial to
combat against PD to allow patients to deal with it properly. However, there is no medical
test (s) available to diagnose PD conclusively. Therefore, computer-aided diagnosis (CAD)
systems offered a better solution to make the necessary data-driven decisions and assist the
physician. Numerous studies were conducted to propose CAD to diagnose PD in the early …