Epileptic prodromes: are they nonconvulsive status epilepticus?
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Updated: May 11, 2026

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Published on: September 20, 2024
Jørgen Alving1, Sándor Beniczky
1Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark. jag@filadelfia.dk
Purpose:
The aim of this study was to assess how frequently prodromes occur in an adult patient group from a tertiary referral epilepsy centre and to investigate the EEG changes during the prodromes.
Methods:
578 consecutive patients were interviewed on subjective phenomena, experiences heralding the seizures, for at least 30min before the start of the seizure. EEGs were recorded during the prodromes.
Results:
Ten out of 490 included patients had prodromes (2%). We were able to record EEG during prodromes in 6 patients. Three patients had EEG changes corresponding to nonconvulsive status epilepticus. Three patients had unrevealing EEG recordings during prodromes.
Conclusion:
Our results suggest that at least in a part of the patients, the prodromes are actually ictal phenomena, and should be treated as nonconvulsive status epilepticus.
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