What is the difference between health and Parkinson's disease?

Parkinson's disease is a neurodegenerative disease, which is common in middle-aged and elderly people. British doctor james Parkinson described Parkinson's disease in 18 17, and its symptoms include motor symptoms and non-motor symptoms. Motor symptoms include tremor, rigidity, bradykinesia and postural disorders. Non-exercise symptoms include constipation, frequent urination, urgency, urinary incontinence, anxiety and depression.