Orthostatic myoclonus(OM)is not an independent disease but rather a clinical syndrome often associated with neurodegenerative disorders and systemic diseases.Its hallmark features include jerking movements in the lower limbs when standing,accompanied by instability and gait disturbances.Symptoms tend to alleviate or resolve upon relieving weight-bearing.OM can be easily confused with orthostatic tremor.This review focuses on the clinical features,electrophysiological characteristics,differential diagnosis,and treatment of OM,aiming to enhance clinicians'awareness of OM.
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