Parkinson's disease

Most people who suffer from Parkinson's disease are over the age of fifty. Although one in five cases occurs in people under the age of forty, the likelihood of being diagnosed with Parkinson's disease increases with age.

The underlying cause of Parkinson's disease is a decrease in a chemical substance known as dopamine. Dopamine is a neurotransmitter, a chemical present in the brain that transmits signals between the nerve cells that regulate motor function movement, balance and walking.

Treating Parkinson's disease

At present, there is no cure for Parkinson's disease. Instead, treatment focuses on the relief of these key symptoms:

Tremor: an uncontrollable trembling or shaking
Rigidity: an abnormal stiffness of the muscles
Bradykinesia: an extreme slowness of movement and reflexes
Postural instability: an inability to stand in a balanced or stable position.

People with Parkinson's disease may also experience other problems, including tiredness, depression, difficulties with balance and handwriting. They can also find their speech and facial expression change. Some people have difficulties eating and swallowing.