How is Lennox-Gastaut syndrome (LGS) classified?

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

LGS can be classified according to its suspected etiology as either idiopathic or symptomatic. Patients may be considered to have idiopathic LGS if normal psychomotor development occurred prior to the onset of symptoms, no underlying disorders or definite presumptive causes are present, and no neurologic or neuroradiologic abnormalities are found. In contrast, symptomatic LGS is diagnosed if a likely cause can be identified as being responsible for the syndrome.


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