ILAE Logo
Epilepsy Diagnosis Logo

EPILEPTIC SPASMS

Background/Interictal/Activation

Please refer to specific syndromes and etiologies in which this seizure type occurs for specific information. As a general rule, EEG abnormality may be first evident / enhanced in sleep and on wakening.

Ictal

Epileptic spasms are most commonly accompanied by a high voltage triphasic sharp or slow wave followed by low amplitude fast activity and voltage attenuation. The EEG pattern may be generalized (for generalized epileptic spasms) or seen focally (for focal epileptic spasms). This EEG pattern may be seen in sleep with or without clinical seizures seen.

Feedback | Home | Contact Us | Privacy | Terms & Conditions of Use | Log In For Videos
Creative Commons License
This website is owned by the International League Against Epilepsy. Text on this website, last updated July 15, 2022,
is available under a Creative Commons Attribution-ShareAlike 4.0 International License,
EXCEPTING all videos and images, which remain copyrighted by the International League Against Epilepsy.