The International League Against Epilepsy (ILAE) presents a revised operational clas-siﬁcation of seizure types. The purpose of such a revision is to recognize that some sei-zure types can have either a focal or generalized onset, to allow classiﬁcation when theonset is unobserved, to include some missing seizure types, and to adopt more trans-parent names. Because current knowledge is insufﬁcient to form a scientiﬁcally basedclassiﬁcation, the 2017 Classiﬁcation is operational (practical) and based on the 1981Classiﬁcation, extended in 2010. Changes include the following: (1) “partial” becomes“focal”; (2) awareness is used as a classiﬁer of focal seizures; (3) the terms dyscognitive,simple partial, complex partial, psychic, and secondarily generalized are eliminated;(4) new focal seizure types include automatisms, behavior arrest, hyperkinetic, auto-nomic, cognitive, and emotional; (5) atonic, clonic, epileptic spasms, myoclonic, andtonic seizures can be of either focal or generalized onset; (6) focal to bilateral tonic–clonic seizure replaces secondarily generalized seizure; (7) new generalized seizuretypes are absence with eyelid myoclonia, myoclonic absence, myoclonic–atonic,myoclonic–tonic–clonic; and (8) seizures of unknown onset may have features that canstill be classiﬁed. The new classiﬁcation does not represent a fundamental change, butallows greater ﬂexibility and transparency in naming seizure types.
Journal Watch Operational classiﬁcation of seizure types by theInternational League Against Epilepsy: Position Paper ofthe ILAE Commission for Classiﬁcation and Terminology
Operational classiﬁcation of seizure types by theInternational League Against Epilepsy: Position Paper ofthe ILAE Commission for Classiﬁcation and TerminologyFeatured
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