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There are several different types of tremor, including essential tremor, drug-induced tremor, Parkinson's tremor, and tremor due to other conditions such as neuropathy (nerve pain), stroke, liver failure, multiple sclerosis, and high levels of thyroid hormone.
Cause of essential tremor. Essential tremor is the most common type of tremor, and affects more people than Parkinsonâs disease. Some estimates suggest that around one in five people over the age of 65 years is affected. There is no known cause, but a genetic link is strongly suspected.