Because Parkinsonâs disease symptoms are due to a deficiency of the brain chemical dopamine, the main drug treatments help increase dopamine levels in the brain. Levadopa, usually combined with carbidopa, is the standard drug treatment.
Here are all the possible meanings and translations of the word poison-ivy. Wiktionary(0.00 / 0 votes)Rate this definition: poison-ivy(Noun) A woody vine plant in the family Anacardiaceae well-known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people.
A highly variable perennial woody vine or shrub, native to North America and Asia and introduced in Great Britain, Europe, and Australia. There is considerable disagreement over whether poison ivy is one species with variations, or many separate species. It is also sometimes said that the poison oaks (Toxicodendron diversilobum and Toxicodendron quercifolium) are merely variations of the same species.