title: The epileptic encephalopathies.
abstract: The term epileptic encephalopathy refers to the condition where epileptic activity, clinical or subclinical, is thought to be responsible for any disturbance of cognition, behavior, or motor control. Although currently described as a concept that may occur in any of the epilepsies, children with the severe early onset epilepsies are thought to be more at risk than others. These epilepsies have been termed the "epileptic encephalopathies." The degree to which epileptic activity is responsible for neurodevelopmental compromise may be variable in each individual case, and the degree to which this may be reversible unclear. Data from the laboratory and the clinic may provide greater insight into the degree to which epileptic activity may contribute in individual syndromes, although much is yet to be learnt. The aim in epilepsy management remains one of seizure control; in some specific circumstances this may include subclinical epileptic activity. However, avoidance of treatment that may lead to deterioration of seizure control may be equally important.
authors.affiliation: Neurosciences Unit, UCL-Institute of Child Health, Great Ormond Street Hospital, London and the Young Epilepsy, Lingfield, UK. Electronic address: h.cross@ucl.ac.uk.
authors.forename: J Helen
authors.initials: JH
authors.lastname: Cross
authors.forename: Renzo
authors.initials: R
authors.lastname: Guerrini
mesh_terms: D002658:Developmental Disabilities / Q000150:complications*; D004569:Electroencephalography; D006801:Humans; D008607:Intellectual Disability / Q000150:complications* / Q000175:diagnosis; D065768:Lennox Gastaut Syndrome; D013036:Spasms, Infantile / Q000150:complications* / Q000175:diagnosis