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TREMORS SYMPTOMS |
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Tremor may be a symptom of an underlying
disease, and it may be caused by drugs. It may also exist as the
only symptom (essential tremor). Underlying disease Some types of tremor are signs of an underlying condition. About a million and a half Americans have Parkinson's disease, a disease that destroys nerve cells. Severe shaking is the most apparent symptom of Parkinson's disease. This coarse tremor features four to five muscle movements per second. These movements are evident at rest but decline or disappear during movement. Other disorders that cause tremor are multiple sclerosis, Wilson's disease, mercury poisoning, thyrotoxicosis, and liver encephalopathy. A tremor that gets worse during body movement is called an "intention tremor." This type of tremor is a sign that something is amiss in the cerebellum, a region of the brain concerned chiefly with movement, balance and coordination. Essential tremor Many people have what is called "essential tremor," in which the tremor is the only symptom. This type of shaking affects between three and four million Americans. |
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