Parkinson’s Disease
Parkinson’s disease is a progressive nervous system disorder that affects movement. Symptoms start gradually, sometimes with a barely noticeable tremor in just one hand. Tremors are common, but the disorder also commonly causes stiffness or slowing of
movement.
Parkinson’s disease can also affect emotions and thinking ability (cognition). Some affected individuals develop psychiatric conditions such as depression and visual hallucinations. People with Parkinson’s disease also have an increased risk of developing dementia, which is a decline in intellectual functions including judgment and memory.