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.
Causes & Symptoms. Parkinsonâs disease is caused by damage to a special kind of nerve cells (neurons) in a specific part of the brain that produce a chemical called dopamine. Dopamine sends messages throughout the body that help control movement. In people with Parkinsonâs, these neurons produce less and less dopamine. As a result, controlling movement and carrying out other tasks gets increasingly difficult. The cause of the damage to these neurons is not known.