What is the ILAE classification of Lennox-Gastaut syndrome (LGS)?

Updated: Nov 09, 2018
  • Author: Koshi A Cherian, MD; Chief Editor: Amy Kao, MD  more...
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Answer

In 2001, the International League Against Epilepsy (ILAE) Task Force on Classification and Terminology proposed to include LGS among the epileptic encephalopathies. These are conditions in which not only the epileptic activity but also the epileptiform EEG abnormalities themselves are believed to contribute to the progressive disturbance in cerebral function. [3]

In the revision of the classification of seizures and epilepsy published in 2010, the terms "idiopathic," "symptomatic," and "cryptogenic" were eliminated and replaced by "genetic," "structural/metabolic," and "unknown" to encourage focus on specific underlying mechanisms. [4] However, many neurologists continue to use those terms as described above.


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