Some are available by prescription only; others can be bought over-the-counter. FDA has also approved several prescription drugs to relieve dry mouth caused by certain medical treatments or conditions, such as Sjoegren'sjÃ¶gren s syndrome and radiation for head or neck. cancer
Parkinson's disease (or, simply, Parkinson's or PD) is the most common form of parkinsonism, a group of motor system disorders. It is a slowly progressing, degenerative disease that is usually associated with the following symptoms, all of which result from the loss of dopamine-producing brain cells: Tremor or trembling of the arms, jaw, legs, and face.
The hallmark of Parkinsonâs disease is the loss of these neurons and a decrease in dopamine; when these neurons die, there are fewer dopamine transporters, leading to decreased activity on the brain scan. For the classic motor symptoms of Parkinsonâs to be present, typically 50% or more of these neurons must be lost.