What is Parkinson's disease?

Parkinson's disease is a progressive neurological condition that affects movement, caused by the loss of nerve cells that produce dopamine in the brain. It develops gradually, and early symptoms can be subtle and easily overlooked.

Common symptoms include tremor, particularly at rest, slowness of movement, muscle stiffness, and changes in balance or walking pattern. Non-movement symptoms such as changes in mood, sleep, and sense of smell can also occur, sometimes before movement symptoms appear.