Parkinson s diseas e meaning

noun a progressive nervous disorder without aknown cause which is a type of Parkinsonism the main symptoms of which are trembling hands a slow shuffling walk and difficulty inspeaking [Described . After James Parkin-son ( ) English physician.]COMMENT: Parkinson s disease affects the ba-sal ganglia of the brain which control move- ment due to the destruction of dopaminergic neurones. Some cases can be improved by treatment with levodopa which is the precur- sor of the missing neurotransmitter dopamine or by drugs which inhibit the breakdown of dopamine.paronychia