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A cerebellar tremor is a type of intention tremor caused by lesions or damage to the cerebellum from a stroke, tumor, or disease, such as multiple sclerosis. It may also be the result of chronic alcoholism or overuse of certain medications.
The cause of essential tremor is not completely understood. It is thought that certain regions of the brain send abnormal signals to the muscles, causing tremors. These brain regions include the cerebellum, red nucleus, globus pallidus, thalamus, and cortex. Genetics is thought to contribute to the cause of essential tremors in approximately half of those with the condition.