epileptic encephalopathy
Pronunciation: ep-ih-LEP-tick en-sef-ah-LOP-ah-thee
A condition where epileptic activity itself contributes to severe cognitive and behavioral impairments beyond what might be expected from the underlying pathology alone.
Full Definition
Epileptic encephalopathy refers to a group of severe epilepsy syndromes where the epileptic activity itself is believed to contribute to progressive disturbances in cerebral function, leading to cognitive, behavioral, and neurological deterioration beyond what would be expected from the underlying etiology alone. These conditions are characterized by frequent seizures, abnormal interictal EEG patterns, and developmental regression or arrest. Examples include West syndrome, Lennox-Gastaut syndrome, Dravet syndrome, and Ohtahara syndrome. The concept emphasizes that aggressive seizure control is essential because ongoing epileptic activity may cause additional brain dysfunction independent of the original brain pathology. Early recognition and treatment are crucial to optimize developmental outcomes in affected children.
Usage
Usage note: The 2022 ILAE classification prefers 'developmental and epileptic encephalopathy' to emphasize both developmental and epileptic contributions.
In Context
- "The infant's developmental regression suggested an epileptic encephalopathy rather than a benign seizure disorder." — Diagnostic assessment note
- "Early aggressive treatment is essential in epileptic encephalopathies to prevent further cognitive decline." — Treatment guideline