ictal
Pronunciation: IK-tal
Relating to or occurring during an epileptic seizure.
Full Definition
Ictal refers to the period during which an epileptic seizure is actively occurring. This term is used to describe symptoms, behaviors, EEG changes, or imaging findings that happen at the time of the seizure event itself. Ictal phenomena can include motor symptoms (such as convulsions), sensory experiences (like hallucinations), autonomic changes (heart rate alterations), or consciousness impairment. The ictal period is distinguished from the pre-ictal (before seizure), post-ictal (after seizure), and inter-ictal (between seizures) periods. Understanding ictal semiology (the clinical manifestation of seizures) is crucial for seizure classification, localization of the seizure focus, and determining appropriate treatment strategies.
Usage
Usage note: Always distinguish from interictal when describing EEG or imaging findings.
In Context
- "Ictal EEG showed rhythmic theta activity in the left temporal region during the complex partial seizure." — Electroencephalography report
- "The patient's ictal symptoms included automatisms and loss of awareness lasting two minutes." — Seizure description