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| {{CMG}} {{AE}} {{VVS}} {{Fs}} | | {{CMG}} {{AE}} {{VVS}} {{Fs}} |
| ==Classification== | | ==Classification== |
| * Epilepsy may be classified according to: | | * Epilepsy may be classified according to seizure type into: |
| ** By their first cause (or [[etiology]]). | | ** Generalized epilepsy |
| ** By the observable manifestations of the [[Seizure|seizures]], known as semiology. | | ** Focal epilepsy |
| ** By the location in the [[brain]] where the [[Seizure|seizures]] originate. | | ** Generalized and focal epilepsy |
| ** As a part of discrete, identifiable medical [[syndrome]]s.
| | ** Unknown if generalized or focal epilepsy |
| ** By the event that triggers the [[Seizure|seizures]], as in primary reading epilepsy. | |
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| * In 1981, the International League Against Epilepsy (ILAE) proposed a classification scheme for individual [[Seizure|seizures]] that remains in common use.<ref name="ILEA1981">{{cite journal
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| | author =
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| | title = Proposal for revised clinical and electroencephalographic classification of epileptic seizures. From the Commission on Classification and Terminology of the International League Against Epilepsy.
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| | journal = Epilepsia
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| | volume = 22
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| | issue = 4
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| | pages = 489-501
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| | year = 1981
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| | id = PMID 6790275}}</ref> This classification is based on observation (clinical and [[EEG]]) rather than the underlying [[pathophysiology]] or [[anatomy]] and is outlined later on in this article. In 1989, the ILAE proposed a classification scheme for epilepsy and epileptic syndromes.<ref name="ILEA1989">{{cite journal
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| | author =
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| | title = Proposal for revised classification of epilepsies and epileptic syndromes. Commission on Classification and Terminology of the International League Against Epilepsy.
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| | journal = Epilepsia
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| | volume = 30
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| | issue = 4
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| | pages = 389-99
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| | year =1989
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| | id = PMID 2502382}}</ref> This can be broadly described as a two-axis scheme having the cause on one axis and the extent of localization within the [[brain]] on the other. Since 1997, the ILAE have been working on a new scheme that has five axes: Ictal phenomenon, [[seizure]] type, [[syndrome]], [[etiology]] and impairment.<ref name="ILAE">{{cite web
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| | url = http://www.ilae-epilepsy.org/Visitors/Centre/ctf/overview.cfm
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| | title = A Proposed Diagnostic Scheme For People With Epileptic Seizures And With Epilepsy: Report Of The Ilae Task Force On Classification And Terminology
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| | accessdate = 2006-07-18
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| | author = Jerome Engel
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| | publisher = ILAE
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| }}</ref>
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| ==References== | | ==References== |