ictal
Pronunciation: IK-tal
Relating to or occurring during a seizure or acute neurological event.
Full Definition
Ictal refers to the period during which a seizure or acute neurological event is actively occurring. This term is fundamental in epileptology and neurodiagnostics, as it describes the actual seizure phase when abnormal electrical discharges are taking place in the brain. Ictal EEG recordings capture the electrical patterns present during seizures, which are essential for seizure localization and classification. The ictal period is distinguished from interictal (between seizures) and postictal (after seizure) phases, each having distinct clinical and electrographic characteristics.
Usage
Usage note: From Latin 'ictus' meaning stroke or blow; used specifically in epilepsy contexts.
In Context
- "Ictal SPECT imaging revealed hyperperfusion in the right temporal lobe." — Epilepsy surgery evaluation
- "The patient's ictal semiology consisted of oral automatisms and loss of awareness." — Seizure characterization