Man told shakes were caused by ‘too much tea’ diagnosed with Parkinson’s at 20

John Granahan was just 13 when he started to shake uncontrollably in his English class – he was later diagnosed with early onset Parkinson's disease at just 20-years-old

John Granahan was just 13 when he started to shake uncontrollably in his English class – he was later diagnosed with early onset Parkinson's disease at just 20-years-old

John Granahan was just 13 when he started to shake uncontrollably in his English class – he was later diagnosed with early onset Parkinson's disease at just 20-years-old