There are four main signs of Parkinson's disease:
- Resting tremor (often in one hand to begin with)
- Bradykinesia (slow movements)
- Rigidity ('stiffness' of joints when the doctor moves them)
- Postural instability (poor balance)
These motor symptoms often cause change in gait (slow, shuffling stye of walking with small steps).
There are many other symptoms that Parkinson's disease can cause including depression, difficulties dividing attention, constipation, visual hallucinations, loss of smell, etc.
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