Parkinson's disease is a progressive neurodegenerative disorder characterized primarily by the loss of dopamine-producing neurons in specific areas of the brain, notably the substantia nigra. This loss of neurotransmitter leads to a deficiency of dopamine, which is essential for regulating smooth, voluntary muscle movements. Clinically, the hallmark motor symptoms include resting tremor, rigidity, bradykinesia (slowness of movement), and postural instability. The condition affects the motor system but may also impact non-motor functions, leading to cognitive, mood, and autonomic system changes. Management strategies focus on alleviating symptoms and maintaining function, involving a combination of pharmaceutical replacement therapies and lifestyle modifications aimed at improving motor control.