|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|Parkinson's disease (ˈpɑːkɪnsənz)|
|Often shortened to: Parkinson's, Parkinsonism, Parkinson's syndrome, paralysis agitans, Also called: shaking palsy a progressive chronic disorder of the central nervous system characterized by impaired muscular coordination and tremor|
|[C19: named after James Parkinson (1755--1824), British surgeon, who first described it]|
Parkinsonism Par·kin·son·ism or par·kin·son·ism (pär'kĭn-sə-nĭz'əm)
Any of a group of nervous disorders similar to Parkinson's disease, marked by muscular rigidity, tremor, and impaired motor control and often having a specific cause, such as the use of certain drugs or frequent exposure to toxic chemicals. Also called Parkinson's syndrome.
Parkinson's disease Par·kin·son's disease (pär'kĭn-sənz)
A progressive nervous disease occurring most often after the age of 50, associated with the destruction of brain cells that produce dopamine, and characterized by muscular tremor, slowing of movement, partial facial paralysis, peculiarity of gait and posture, and weakness. Also called paralysis agitans.
|Parkinson's disease (pär'kĭn-sənz) Pronunciation Key
A progressive neurologic disease occurring most often after the age of 50, associated with the destruction of brain cells that produce dopamine. Individuals with Parkinson's disease exhibit tremors while at rest, slowing of movement, stiffening of gait and posture, and weakness. The disease is named after its discoverer, British physician and paleontologist James Parkinson (1755-1824).
A chronic disease of the nervous system that usually strikes in late adult life, resulting in a gradual decrease in muscle control. Symptoms of the disease include shaking, weakness, and partial paralysis of the face. Certain drugs can help alleviate some of its symptoms.