Essential tremor, also known as benign essential tremor, is a neurological condition that causes involuntary and rhythmic shaking. It can affect almost any body part, but the trembling commonly occurs in your hands, especially when you try to do simple tasks, such as drinking from a glass or tying shoelaces.
The exact cause of the essential tremor remains unknown. However, it appears to involve abnormal electrical brain activity processed through the thalamus, a structure deep in the brain that coordinates and controls muscle activity. This may be corrected with deep brain stimulation.
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