Parkinson's disease is an illness that affects the part of your brain that controls how you move your body. Some people with Parkinson’s first notice weakness, difficulty walking, and stiff muscles.

Neurodegenerative diseases have long been associated with aggregations of apparently toxic proteins, whether that’s amyloid precursor protein (APP) in Alzheimer’s disease, α-synuclein in Parkinson’s, ...

People with Parkinson's disease are more likely to develop certain types of dementia. Find out about the causes, symptoms and treatments. Parkinson’s disease is a brain disease that affects around 145 ...