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.


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

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