Symptoms of Parkinson's Disease

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Symptoms of Parkinson's Disease Parkinson's Disease is a degenerative disorder of the nervous system. Parkinson's is a disease that may happen in younger people, but the risk mainly increases with age. This is because many of the cellular systems in the brain are difficult to renew by themselves while there are trillions of nerve cells in the brain to compensate for the loss of these cells. For example, in Parkinson's disease the symptoms are caused by the selective loss of a small population in the brain consisting of about 500,000 dopaminergic cells. The dopaminergic cells are situated deep in the midbrain and carries messages back and forth to nerve cells. In any brain that grows older, some of these dopamine cells will die over time. The rate at which the cells die is different among individuals. Some people, whose rate of dopamine cell death is slightly higher than normal. the chance that they will soon lose critical 85-90 percent of the cells that are needed for normal function is high. The brain can somehow manage to compensate for a loss of about 85 percent of these cells, but when only a small number of working dopamine cells or less remain on each side of the brain, the symptoms of Parkinson's disease appear. The neurotransmission that takes place at the nerve terminals that produce dopamine is needed for all of us to initiate movements, and without it, we freeze up and become unable to move. Tremors are the symptom the public most often identifies with Parkinson's disease, but in fact up to 25 percent of patients experience very slight tremor or non at all. When it is present, the tremor may be worse on one side of the body. Besides affecting the arms and legs, it sometimes spreads ... ... middle of paper ... ...surgery for Parkinson's disease have produced some good results, the long term effects of such surgeries are not yet known. So doctors usually only perform these surgeries as last resort treatments. From doing research on Parkinson's disease I have learned a lot. I never would have realized what these people have to go through. They not only have physical challenges, but mental also. People with the disease have to learn to live with the fact that they will never be cured, and that their disease will keep progressing. I give anyone who has Parkinson's disease credit, because I now understand what they have to go through. Bibliography: Bibliography Mac Millan Health Encyclopedia. Non-communicable disease and disorders. Vol. 3. New York, Mac Millan Publishing company, 1993. NINDS PArkinson's diesease info page. www. apdaparkinson.com
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