Parkinson's disease is a neurological disorder that affects movement. It is caused by the loss of nerve cells in the brain that produce dopamine, a chemical that helps to control movement.

What are the symptoms of Parkinson's disease?

The symptoms of Parkinson's disease can vary from person to person, but they often include:

• Tremors (shaking)

• Slowness of movement (bradykinesia)

• Rigidity (stiffness)

• Balance problems

• Difficulty walking

• Speech changes

• Writing changes

• Loss of facial expression

• Depression

• Anxiety

• Sleep problems