Prescience as an aura of temporal lobe epilepsy

Purpose: A patient with a distinct aura of prescience as a manifestation of temporal lobe epilepsy was encountered. The experience prompted a review of this ictal phenomenon among patients attending a tertiary care epilepsy outpatient clinic. Methods: A computer epilepsy database was searched for patients with simple partial sensory seizures and complex partial seizures with auras. Identified patients had charts reviewed for details of the auras; patients were contacted and asked to provide written descriptions of their experiences. Literature searches (PubMed) were done by using the terms "precognition" or "prescience" and "seizures" or "epilepsy." Standard comprehensive epilepsy textbooks were reviewed. Results: The charts of 218 patients were reviewed from 927 in the database; three had prescience as an ictal feature. The patients' descriptions were very similar in all cases (a profound sense of "knowing" what was going to happen in their environment in the immediate future). The experience was distinct from déjà vu and other psychic experiences. All patients probably have temporal lobe epilepsy. Only one other description of prescience as an ictal feature was found in the literature. Conclusions: Prescience can occur as an ictal feature of temporal lobe epilepsy and represents a previously underreported psychic phenomenon. The potential lateralizing value of this symptom is yet to be determined.