Although the exact cause of Parkinson’s disease is still unknown, scientists believe it’s a mixture of genetic and environmental factors. Having two or more of these four significant symptoms is the primary way physicians diagnose Parkinson’s:
- Postural instability: difficulty balancing, which can increase the risk of falling
- Bradykinesia: slowness of spontaneous and automatic movements, making everyday functions difficult
- Tremors: rhythmic back-and-forth movement, often in the hands
- Rigidity: resistance to movement due to contracted and stiff muscles
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