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About LGS

Lennox-Gastaut syndrome (LGS) is not a well-known disorder. Although some people may be familiar with epilepsy or seizures in general, most haven’t heard of LGS.

LGS accounts for up to 4% of all childhood epilepsy cases.1

LGS is usually characterized by:

  • Multiple seizure types
  • An EEG with a slow spike-wave pattern between seizures
  • Cognitive impairment or developmental delays2
Because LGS is so rare, you’re probably here because someone you love has LGS. Whether you are a concerned parent wondering what to do, or a friend that just wants to learn more, you’ve found a great place to start.

Download our Tips Sheet, designed to help families cope with LGS. is here to help you get an understanding of LGS, to provide information regarding various treatment options, and to make valuable resources available.

Learn more: Understanding epilepsy »

1.  Crumrine PK. Lennox-Gastaut syndrome. J Child Neurol. 2002;17(suppl 1):S70-75.
2.  Wheless J. Lennox-Gastaut syndrome: characteristics and clinical manifestations. August 7, 2009. Accessed August 20, 2012.

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Learn More
Understanding epilepsy »
What it means to have epilepsy
Diagnosing LGS »
Challenges with diagnosing LGS
Seizures associated
with LGS »

The seizure types connected to LGS
Behavioral issues »
How LGS can affect behavior

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