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tonic seizure

 

Definition: a seizure characterized by a sustained increase in muscle tone, of abrupt or gradual onset and offset, lasting a few seconds to a minute, usually 10–20 seconds; tonic seizures affecting proximal muscles bilaterally frequently lead to the adoption of a posture.

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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