Constipation, difficulty swallowing and irritable bowel symptoms are possible markers, say researchers.

The study detected physical differences in the eyes of people with Parkinson's and those without the condition.

Tracking speed of movement might provide a diagnosis up to seven years ahead of symptoms, a study suggests.

Samuel Smith thought his diagnosis might stop him playing, but he went on to record with his heroes.

Little is known about the early stages of Parkinson's, as much damage occurs before symptoms appear.

It is testing a device aimed at improving patient mobility.

Following his diagnosis Scott Hanley turned to physical activity and says he is now “symptom free”.

“People under 40 can certainly get Parkinson's,” says ex-rugby player trying to cope with disease.

A woman who can detect Parkinson's through smell helps scientists develop a test for the disease.