Generalized myoclonic-atonic seizure

What it means

A generalized myoclonic-atonic seizure is a type of generalized motor seizure characterized by a myoclonic jerk followed by an atonic motor component.

A myoclonic-tonic seizure was previously called a myoclonic-astatic seizure. ILAE2017 does not currently consider myoclonic-atonic seizures to be a form of myoclonic seizure which is why it is classified as a motor seizure.

Rare diseases that can present with this1

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Generalised myoclonic-atonic seizure · Myoclonic atonic seizures · Myoclonic-astatic seizure