Parkinson's Disease Health Center

Parkinson's disease primarily affects the nervous system. Symptoms include trembling in the hands, arms, legs, jaw and face, rigidity or stiffness of the limbs, bradykinesia (slowness of movement) and postural instability (impaired balance and coordination).

The first symptom of Parkinson's disease is usually the trembling or shaking of one particular limb, especially when the body is at rest. This tremor typically begins on one side of the body, often in one hand. These tremors can also affect the arms, legs, feet and face. 

As the condition progresses and the individual ages, the symptoms become more severe and the patient may eventually have trouble walking, talking or completing simple tasks. 

Other symptoms of Parkinson's disease include depression and emotional changes, difficulty swallowing, chewing or speaking, urinary problems and constipation, skin problems, sleep disruption and autonomic dysfunction (problems with the part of the nervous system that controls involuntary actions).