Four early signs of Parkinson’s – and how to recognise them

Disturbed sleep is one of the non-motor symptoms of Parkinson's disease that can appear as the condition progresses. Picture: iStock 

Parkinson's disease affects one to two in every 1,000 people. Some 18,000 in Ireland have the neurodegenerative condition.

A tremor is the symptom most people associate with Parkinson’s. But other warning signs can appear years earlier.