Functional tremor is the most common subtype of functional movement disorder(FMD).At present,there is no"gold standard"for diagnosis.Most clinical manifestations coincide with organic tremor,which can easily lead to misdiagnosis and mistreatment.Characteristic electrophysiological manifestations can provide objective and repeatable diagnostic information,effectively supplement the history and physical examination,and can also be used in the differential diagnosis from organic tremor.This article reviews the electrophysiological characteristics of functional tremor and its application in diagnosis and differential diagnosis,in order to improve the clinical understanding of this disease.
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