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Smith, RF; Devinsky, O; Luciano, D
"Inhibitory motor status: Two new cases and a review of inhibitory motor seizures"
Journal of epilepsy 1997 JAN-FEB ; 10(1):15-21
Transient paralysis is an uncommon seizure symptom. We report two new cases of inhibitory motor status and review 24 previously cases of inhibitory seizures. Among the 22 adult patients, 14 (64%) had a frontoparietal lesion (tumor, 7; stroke, 7); 5 (23%) had mesiotemporal sclerosis (MTS), and 3 (14%) had no identified lesion. In contrast, all 4 pediatric patients had no identified brain lesions. Inhibitory motor seizures were associated most commonly with lesions in frontoparietal primary and supplementary motor-sensory area and, less often, in the mesial temporal lobe. Inhibitory motor seizures arising from frontoparietal foci are often more prolonged (>2-3 min) than those arising from the mesial temporal area (<1.5 min). Patients with temporal lobe seizure foci manifest ictal flaccidity of an extremity during a complex partial seizure (CPS), which may represent motor neglect rather than ictal weakness since strength cannot be accurately assessed when consciousness is impaired. Inhibitory motor seizures from sensorimotor cortex seizure foci are probably more common than is recognized. (C) 1997 by Elsevier Science Inc

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