RT Book, Section A1 Cross, J. Helen A2 Duchowny, Michael A2 Cross, J. Helen A2 Arzimanoglou, Alexis SR Print(0) ID 1138409744 T1 Focal Seizures in Infancy T2 Pediatric Epilepsy YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071496216 LK neurology.mhmedical.com/content.aspx?aid=1138409744 RD 2024/04/16 AB Focal seizures are the most common seizure type presenting in childhood. They may present as the occurrence of a single seizure type, or as part of a wider spectrum of seizure types integral to an epilepsy syndrome. By definition and implication, such seizures arise from one area of the brain. The most recent proposal by the ILAE (The International League Against Epilepsy) defined a focal seizure "as one that originates within networks limited to one hemisphere. They may be discretely localised or more widely distributed and may also arise in subcortical structures. For each seizure type, ictal onset is consistent from one seizure to another, with preferential propagation patterns that can involve the contralateral hemisphere. In some cases however there is more than one network, and more than one seizure type, but each individual seizure type has a consistent site of onset."1