<p>'Billy Connolly says he's no idea who Parkinson was and just wishes he'd kept his disease to himself. He should read this book.' Jeremy Paxman<br><br><br>Parkinson's disease is one of the most common forms of dementia, with 10,000 new cases each year in the UK alone, and yet few know anything about the man the disease is named after.<br><br><br>In 1817 - exactly 200 years ago - James Parkinson (1755-1824) defined the disease so precisely that ...