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 1% 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. 

LivingWithLGS.com is here to help you get an understanding of LGS, to provide information regarding various treatment options, and to make valuable resources available. 

NEXT: Understanding Epilepsy


  • 1. Crumrine PK. Lennox-Gastaut syndrome. J Child Neurol. 2002;17(suppl 1):S70-75.
  • 2. Shafer PO, Kiriakopoulos E, Sirven JI. LGS: characteristics. Epilepsy Foundation Web site. http://www.epilepsy.com/information/lennox-gastaut-syndrome/lgs-characteristics. Updated November 2014. Accessed August 31, 2016.

This Web site contains information relating to various medical conditions and treatment. Such information is provided for educational purposes only and is not meant to be a substitute for the advice of a physician or other healthcare professionals. You should not use this information for diagnosing a health problem or disease. In order for you to make intelligent healthcare decisions, you should always consult with a physician or other healthcare provider for your, or your loved one's, personal medical needs. All quotes included in this Web site represent the individual experience of some doctors, some patients, and their caregivers. Individual responses to treatment may vary.

This site is intended for residents of the United States only. Any products discussed herein may have different product labeling in different countries.