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2. Essential tremor - Wikipedia

   en.wikipedia.org/wiki/Essential_tremor

   Essential tremor (ET), also called benign tremor, familial tremor, and idiopathic tremor, is a medical condition characterized by involuntary rhythmic contractions and relaxations (oscillations or twitching movements) of certain muscle groups in one or more body parts of unknown cause. [6]

3. Dystonia - Wikipedia

   en.wikipedia.org/wiki/Dystonia

   Dystonia is a neurological hyperkinetic movement disorder in which sustained or repetitive muscle contractions occur involuntarily, ... essential tremor, ...

4. Tremor - Wikipedia

   en.wikipedia.org/wiki/Tremor

   The tremor may be the initial sign of dystonia localized to a particular part of the body. The dystonic tremor has usually a frequency of about 7 Hz. [2] Essential tremor (sometimes inaccurately called benign essential tremor) is the most common of the more than 20 types of tremor. Although the tremor may be mild and nonprogressive in some ...

5. Hyperkinesia - Wikipedia

   en.wikipedia.org/wiki/Hyperkinesia

   Tremors are symmetric about a midpoint within the movement, and both portions of the movement occur at the same speed. Unlike the other hyperkinetic movements, tremors lack both the jerking associated movements and posturing. [4] Essential tremor (ET), also known as benign essential tremor, or familial tremor, is the most common movement ...

6. Deep brain stimulation surgery developed in Chicago helps ...

   www.aol.com/deep-brain-stimulation-surgery...

   "The degree of tremor control is 90, 95 sometimes even 98 percent. So it's quite … it's almost like a miracle," Sani said. O'Brien began having tremors when he was just 4 years old.

7. Dyskinesia - Wikipedia

   en.wikipedia.org/wiki/Dyskinesia

   Dyskinesia can be anything from a slight tremor of the hands to an uncontrollable movement of the upper body or lower extremities. Discoordination can also occur internally especially with the respiratory muscles and it often goes unrecognized. [3] Dyskinesia is a symptom of several medical disorders that are distinguished by their underlying ...