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Parkinson's Disease

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Parkinson’s disease Parkinson's disease (PD) is a disorder that affects the central nervous system. It affects the body’s movement abilities and creates symptoms such as involuntary shaking of the body. Researchers believe that at least 500,000 people in the United States currently have PD, although some estimates are much higher. Society pays an enormous price for PD. The total cost to the nation is estimated to exceed $6 billion annually. The risk of PD increases with age, so analysts expect the financial and public health impact of this disease to increase as the population gets older. To date, there are no specific diagnostic criteria for Parkinson's disease. Diagnosis can only be made by an expert examination after the person has already developed symptoms. Biochemical measures can be used such as a screening strategy monitoring the dopamine levels in the cerebrospinal fluid. Otherwise, specifically 6(18F)dopa positron emission tomography can be used for a direct measurement of dopamine activity. Using a computer to assess movement time is another test for Parkinson's disease. To examine the electrophysiological characteristics of tremor and preclinical nigral dysfunction characteristic of Parkinson's EMG (electromyography recordings) can be used. Finally, a symptomatic screening is often utilized and consists of nine symptom related questions, as well as disease specific and drug specific questions. This provides an indirect functional measure of the nigrostriatal dopamine system. Increasing age strongly increases the risk of Parkinson's disease. Male gender and possibly Caucasian ancestry are associated with more modest increases in risk. The reported prevalence of Parkinson's disease varies widely in international community-based studies; ranging from 31 to 328 per 100,000 people. Whether these differences represent actual differences in the

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