A man who was diagnosed with Parkinson's Disease at the age of 21 has said he had his first symptom at school when he was just 13.
John Granahan, now 51, first experienced symptoms of the debilitating disease - characterised by unintended and uncontrollable movements - as a teenager.
But he refused to let it stop him from living life to the fullest and, 30 years after he was diagnosed, the computer technician wants to show other people what can be done.
