Parkinson's disease is a progressive, degenerative disorder of nerve cells in the basal ganglia of the brain that results in a resting tremor, rigidity, slowed movements, and postural instability. This course cites the prevalence of Parkinson's Disease in the general population. The primary symptoms and clinical features that are characteristic of Parkinson's are identified. A description of the medical and lifestyle treatment approaches and the role of the rehabilitation professional for individuals with Parkinson's disease are included. The course describes the prognosis for individuals with this debilitating disease.