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Parkinson's Disease

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Parkinson’s Disease
Carley Drye
Bio 330-002
Dr. Blais

Parkinson’s disease (PD) is a neurodegenerative disease that falls under the category of motor disorders. It is caused by the loss of dopamine-producing neurons, which allow for the ability to move with ease. The four signature symptoms of PD are a resting tremor, stiffness, slowness of movement, and postural instability. The disease is most common in people over the age of fifty and also affects more men than women. 6,000 people in the United States are diagnosed each year with the disease. There are currently no consistent blood or imaging tests that indicate a person has Parkinson’s. Instead, a complete family history is taken, and a neurological examination is performed by the physician to test for the most common symptoms. There is presently no cure for this progressive disease, but several treatments have been developed that effectively treat many of the symptoms. The discovery of Parkinson’s disease began in 1817 when James Parkinson wrote a book after observing several patients in his hospital with what he called a “shaking palsy” (1). Fifty years later, in 1867, the scientist Jean-Martin Charcot broadened the description of the disease. He and his students were able to distinguish PD from multiple sclerosis and other diseases characterized by tremoring. Additionally, they developed a clinical spectrum for the disease based on different typed of symptoms (1). They had observed that patients tended to either possess a visible tremor, or had severe rigidity of their limbs. After the continuous observation of numerous patients, Charcot and his students eventually added bradykinesia (slowness of movement) as one of the cardinal manifestations of PD. In the 1880s, William Gowers made the important discovery of the apparent male dominance in Parkinson’s (1). Fifteen years

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