Published online by Cambridge University Press: 09 June 2022
Tremor is defined as an involuntary rhythmic oscillation of a body part around a joint/axis. It is one of the most common movement disorders, and among the various tremor disorders, essential tremor (ET) is the most common. The estimated worldwide prevalence of ET is 0.9% among the general population, and it increases to 4.6% in individuals over 65 years of age.
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