Parkinson's Disease (PD) is a progressive neurological disorder primarily affecting movement. Named after the British physician James Parkinson, who first described its symptoms in 1817, PD is characterized by a variety of motor and non-motor symptoms that can significantly impact an individual's quality of life. Here are some of the most important aspects to understand about Parkinson's Disease: Symptoms: The hallmark symptoms of Parkinson's Disease include tremors, bradykinesia (slowed movement), rigidity ...