Early infantile epileptic encephalopathy [DS:H00606] Symptomatic generalized epilepsies [DS:H00577]
Description
Lennox-Gastaut syndrome (LGS) is an epileptic encephalopathy characterized by multiple seizure types, typical findings in the electroencephalogram (EEG), and delayed psychomotor development. Tonic seizures during sleep are the feature often used as the foundation for diagnosis. LGS is characterized by multiple concurrent seizure types, including tonic, atypical absence seizures, atonic, and myoclonic jerks. Non-convulsive status epilepticus, lasting days to weeks, occurs in half of patients. The etiology of LGS is heterogeneous and includes both genetic and acquired causes. LGS most commonly first manifests in children between 3 and 5 years of age, but onset can also occur at younger and older ages. It has been reported that 20-36% of children diagnosed with LGS syndrome have a history of West syndrome.
Category
Nervous system disease
Brite
Human diseases in ICD-11 classification [BR:br08403]
08 Diseases of the nervous system
Epilepsy or seizures
8A62 Epileptic encephalopathies
H01813 Lennox-Gastaut syndrome