Later in the disease, cells in other portions of the brain and nervous system also degenerate. No one knows why these dopamine-producing cells die. Scientists are exploring several theories including chemical reactions within the body, exposure to toxic substances, certain genetic factors, and accelerated aging. Any one or a combination of these theories may prove to be the cause of Parkinson's disease. Symptomatic treatment for Parkinson's disease is usually successful, especially in the early years, although it does not stop its progress or cure the disease.
Experts believe that a comprehensive approach to treatment is the most effective.
This approach includes early diagnosis, exercise, good nutrition, and medications that reduce the symptoms. Many people find that an important part of their care is the help, comfort, and information they get from participating in Parkinson's support groups. These groups discuss such problems as daily living and are among the first to learn about research results and new treatments. Medication regimens can provide dramatic relief from the symptoms of Parkinson's. A neurologist will prescribe therapies tailored to each person, but it often takes time and patience to identify the medicine and dosage that works best.