Arm levitation in multiple system atrophy

Abstract

AbstractA 53‐year‐old woman presented with repetitive involuntary elevation of the left upper limb beyond her shoulder joint. Initially, the symptom was suspected to be due to a functional neurological disorder. Based on the clinical and radiological findings, however, we diagnosed arm levitation associated with multiple system atrophy. The mechanism of her arm levitation was suggested to be a disturbance of the right frontal cortex with resultant impairment of the inhibitory mechanisms of the primary motor cortex.