Abstract
Essential tremor (ET) is the most common cause of tremor. Most studies suggest that the cerebellum is involved in the pathophysiology of ET and that it is an autosomal dominant disorder; however, the actual cause and a gene responsible for the majority of cases have not been identified. The diagnosis of ET is based on evaluation of clinical signs and symptoms. Pharmacological treatment is effective in 30% to 50% of casesm, with primidone and propranolol being first line therapies. Some benefit has also been reported with gabapentin, topiramate, and benzodiazepines. Deep brain stimulation effectively reduces medication-resistant ET in appropriate cases.
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