Seizure Generalized-onset seizure Generalized onset seizure Primary generalised seizure in 2017 the ILAE Commission for Classification and Terminology recommended classifying a seizure as having focal or generalized onset only when there is a high degree of confidence (over 80%, arbitrarily chosen to parallel the usual allowable beta error) in the accuracy of this determination. Classifying a seizure as having apparently generalized onset does not rule out a focal-onset obscured by limitations of our current clinical methods. UMLS:C0234533 Generalised seizures HP:0002197 HP:0002409 SNOMEDCT_US:246545002 Generalized seizures HP:0007114 Generalised onset seizure HP:0007339 Generalised-onset seizure UMLS:C1833488 Primary generalized seizure A generalized-onset seizure is a type of seizure originating at some point within, and rapidly engaging, bilaterally distributed networks. The networks may include cortical and subcortical structures but not necessarily the entire cortex. Generalized-onset seizures