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Seizure classifications across the years: A translation table.
Sabrina Tavella-Burka1, Patrick Hartnett1, Mark Quigg1
1Department of Neurology, University of Virginia, Charlottesville, Virginia, USA.
Epilepsia
|September 16, 2025
Summary
The International League Against Epilepsy updated its seizure classification in 2025. This table translates the new epilepsy seizure terminology to aid understanding and adoption in clinical practice and research.
Area of Science:
- Neurology
- Epileptology
Background:
- The International League Against Epilepsy (ILAE) has established seizure classifications in 1981 and 2017.
- A revised classification was introduced in 2025, incorporating user feedback and advancements in understanding seizure mechanisms.
Purpose of the Study:
- To provide a translation table for the updated International League Against Epilepsy seizure classification.
- To facilitate the transition and ensure consistent terminology across literature, education, and clinical practice.
Main Methods:
- A comprehensive review of the 1981, 2017, and 2025 International League Against Epilepsy seizure classifications.
- Development of a cross-referenced table mapping terminology between the different classification versions.
Main Results:
- The 2025 classification introduces revised terminology for seizure types and mechanisms.
- The translation table offers a clear mapping between previous and current seizure terminology.
Conclusions:
- The updated seizure classification aims to improve precision in describing epileptic events.
- This terminology translation table is crucial for bridging the gap during the adoption phase of the new classification.
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