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    Lennox-Gastaut Syndrome

    Important
    It is possible that the main title of the report Lennox-Gastaut Syndrome is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.

    Synonyms

    Disorder Subdivisions

    • None

    General Discussion

    Lennox-Gastaut syndrome (LGS) is a severe form of epilepsy that typically becomes apparent during infancy or early childhood. Affected children experience several different types of seizures most commonly atonic, tonic and atypical absence seizures. Children with Lennox-Gastaut syndrome may also develop cognitive dysfunction, delays in reaching developmental milestones and behavioral problems. Lennox-Gastaut syndrome can be caused by a variety of underlying conditions, but in some cases no cause can be identified. Lennox-Gastaut syndrome can be difficult to treat because it is resistant (refractory) to many kinds of antiseizure medications. Research is ongoing to identify and assess new therapies for Lennox-Gastaut syndrome.

    There is no consensus in the medical literature on the exact definition of Lennox-Gastaut syndrome. Generally, three findings are necessary for the diagnosis: multiple generalized seizure types; a slow spike-and-wave pattern (less than 2.5 Hz); and cognitive dysfunction. The International League Against Epilepsy Task Force most recently classified the disorder as an epileptic encephalopathy. Epileptic encephalopathies are a group of disorders in which seizure activity leads to progressive psychomotor dysfunction.

    Resources

    Epilepsy Foundation
    8301 Professional Place
    Landover, MD 20785-7223
    Tel: (866)330-2718
    Fax: (877)687-4878
    Tel: (800)332-1000
    TDD: (800)332-2070
    Email: ContactUs@efa.org
    Internet: http://www.epilepsyfoundation.org

    NIH/National Institute of Neurological Disorders and Stroke
    P.O. Box 5801
    Bethesda, MD 20824
    Tel: (301)496-5751
    Fax: (301)402-2186
    Tel: (800)352-9424
    TDD: (301)468-5981
    Internet: http://www.ninds.nih.gov/

    American Epilepsy Society
    342 North Main Street
    West Hartford, CT 06117-2507
    Tel: (860)586-7505
    Fax: (860)586-7550
    Email: khucks@aesnet.org
    Internet: http://www.aesnet.org

    Genetic and Rare Diseases (GARD) Information Center
    PO Box 8126
    Gaithersburg, MD 20898-8126
    Tel: (301)251-4925
    Fax: (301)251-4911
    Tel: (888)205-2311
    TDD: (888)205-3223
    Internet: http://rarediseases.info.nih.gov/GARD/

    Madisons Foundation
    PO Box 241956
    Los Angeles, CA 90024
    Tel: (310)264-0826
    Fax: (310)264-4766
    Email: getinfo@madisonsfoundation.org
    Internet: http://www.madisonsfoundation.org

    Intractable Childhood Epilepsy Alliance (ICE)
    PO Box 365
    250 Lewisville-Vienna Road
    Lewisville, NC 27023
    Tel: (336)918-9440
    Fax: (336)946-1197
    Internet: http://www.icepilepsy.org

    LGS Foundation, Inc.
    192 Lexington Avenue
    New York, NY 10016
    Tel: (718)374-3800
    Email: christina@lgsfoundation.org
    Internet: http://www.lgsfoundation.org

    CURE: Citizens United for Research in Epilepsy
    223 W. Erie
    Suite 2SW
    Chicago, IL 60654
    Tel: (312)765-7118
    Fax: (312)255-1801
    Tel: (800)765-7118
    Email: info@CUREepilepsy.org
    Internet: http://www.CUREepilepsy.org

    For a Complete Report:

    This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".

    The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.

    It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report

    This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.

    For additional information and assistance about rare disorders, please contact the National Organization for Rare Disorders at P.O. Box 1968, Danbury, CT 06813-1968; phone (203) 744-0100; web site www.rarediseases.org or email orphan@rarediseases.org

    Last Updated: 1/7/2011
    Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2002, 2011 National Organization for Rare Disorders, Inc.

    WebMD Medical Reference from the National Organization for Rare Disorders

    Last Updated: May 28, 2015
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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