Parkinson's disease was first identified and named paralysis agitans (pa-RAL-i-sis AJ-i-tans) by the British physician James Parkinson (1755—1824). His classic description of its symptoms was described in "Essay on the Shaking Palsy." Tremors like those characteristic of Parkinson's had been noted by physicians as ancient as Galen (. 138-201) and by Parkinson's contemporary Gerard van Swieton (1700-1772). Parkinson's observations of the disorder, however, were among the earliest to interpret those symptoms as a well-defined clinical syndrome. Not long after Parkinson's essay was published, the French neurologist Jean-Martin Charcot (1825—1893) began using the term "Parkinson's disease" to describe the condition.