Parkinson’s disease is a progressive neurological condition that occurs when the dopamine-producing nerve cells of the substantia nigra — a region of the brain responsible for smooth, coordinated movement — gradually degenerate. As dopamine levels decline, the motor system becomes progressively impaired.
The condition affects more than 150,000 Australians and is most common in older adults, though younger-onset Parkinson’s does occur. The cause is not fully understood — a combination of genetic predisposition, environmental factors, and age-related neurodegeneration contributes in most cases.
There is currently no cure. With appropriate medical management and supportive care, many people live well with Parkinson’s for many years.