James Parkinson (April 11, 1755 – December 21, 1824) was an English physician, geologist, paleontologist, and political activist. He is most famous for his 1817 work, An Essay on the Shaking Palsy, in which he was the first to describe "paralysis agitans", a condition that would later be named Parkinson's disease after him.
James Parkinson was born in Shoreditch, London, England. He was the son of John Parkinson, an apothecary and surgeon practising in Hoxton Square in London. In 1784 Parkinson was approved by the City of London Corporation as a surgeon.
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