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.
Parkinson's disease results from the loss of brain cells in a region of the brain that controls movement. This loss creates a shortage of dopamine, which is a chemical in the brain called a neurotransmitter.This loss of dopamine results in the problems with movement that are characteristic of Parkinson's disease.his loss causes a deficiency of a certain brain chemical (dopamine), which causes movement problems. Parkinson's disease is a common condition of the brain that typically begins in the middle to later part of life. It is a progressive condition, meaning that it continues to get worse with time.