Definition of Seizure, atonic

Seizure, atonic: A seizure in which the person suddenly loses muscle tone and cannot sit or stand upright. Also known as drop attack and drop seizure.


Last Editorial Review: 3/19/2012

Search MedTerms:


Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.