Mst Ismat Ara

1. Introduction Parkinson’s Disease (PD) is a neurological condition that worsens with time and mostly affects movement. Tremors, stiffness, bradykinesia (slowness of movement), and postural instability are some of its symptoms. Non-motor symptoms are also common and include sadness, sleep difficulties, and cognitive impairment [,]. The illness is brought on by the death of dopamine-producing neurons in the midbrain area known as the substantia nigra.