Parkinson Disease

Anh Thu Le
Professor Crow
ENGL 0349
11/25/2008
Research Paper

Parkinsons disease

paralysis agitans disease is a brain disorder.  It occurs when certain nerve cells (neurons) in a part of the brain called the substantia nigra die or become impaired. Normally, these cells produce a vital chemical cognize as dopamine. Dopamine allows smooth, coordinated function of the bodys muscles and movement.  When approximately 80% of the dopamine-producing cells argon damaged, the symptoms of Parkinsons disease appear.
Parkinsons disease is named afterward the British physician James Parkinson, who foremost described the illness. His current paper describing this disorder, published in 1817, was entitled Essay on the Shaking Palsy. It is a disease that is characterized by four major features is rest tremor of a limb (shaking with the limb at rest), slowness of movement (bradykinesia), rigidity (stiffness, increased resistance to peaceable movement) of the limbs or trunk, poor balance (postural instability).
When at least cardinal of these symptoms are present, and especially if they are more evident on one side than the other, a diagnosis of PD is made, unless on that point are atypical features that suggest an alternative diagnosis.



Patients may first realize something is wrong when they develop a tremor in a limb; movements are slowed and activities take longer to coiffure; or they experience stiffness and have balance problems. Initially, symptoms are a variable combination of tremor, bradykinesia, rigidity and postural instability.  Symptoms typically begin on one side of the body and break over time to the other side. (Parkinson.org)
Changes occur in nervus facialis expression, so that there is a certain facial stronghold (blank expression showing little emotion) or a pure(a) appearance (due to reduced frequency of eye blinking). Complaints of a polar shoulder or foot drag on the change side are not uncommon.  As symptoms come on gradually, older patients may attribute these changes to aging....If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .