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    General Myoclonus

    Important
    It is possible that the main title of the report General Myoclonus is not the name you expected.

    Disorder Subdivisions

    • action myoclonus
    • arrhythmic myoclonus
    • cortical myoclonus
    • dyssynergia cerebellaris myoclonica
    • familial arrhythmic myoclonus
    • hereditary essential myoclonus
    • infantile myoclonic encephalopathy and polymyoclonia
    • intention myoclonus
    • Lance-Adams syndrome
    • cortical-subcortical myoclonus
    • subcortical/non-segmental myoclonus
    • myoclonic epilepsy
    • nocturnal myoclonus
    • opsoclonus
    • palatal myoclonus
    • paramyoclonus multiple
    • pathological myoclonus
    • postanoxic intention myoclonus
    • postencephalitic intention myoclonus
    • progressive myoclonic epilepsy
    • respiratory myoclonus
    • rhythmical myoclonus
    • segmental myoclonus
    • peripheral myoclonus
    • stimulus-sensitive myoclonus

    General Discussion

    Myoclonus is the term used to describe the sudden, involuntary jerking of a muscle or group of muscles caused by muscle contractions (positive myoclonus) or muscle relaxation (negative myoclonus). The twitching or jerking of muscles cannot be controlled by the person experiencing it. Myoclonic jerks may occur infrequently or many times a minute. They sometimes occur in response to an external event or when a person attempts to make a movement. By itself, myoclonus may be seen as a symptom rather than a disease. To some degree, it may occur occasionally to otherwise healthy people. (For instance, hiccups may be considered a type of myoclonus.) In severe cases, it can interfere with movement control and balance, and limit various everyday activities such as eating or talking.

    Resources

    WE MOVE (Worldwide Education and Awareness for Movement Disorders)
    5731 Mosholu Avenue
    Bronx, NY 10471
    USA
    Tel: (347)843-6132
    Fax: (718)601-5112
    Email: wemove@wemove.org
    Internet: http://www.wemove.org

    National Sleep Foundation
    1010 N. Glebe Road
    Suite 310
    Arlington, VA 22201
    Tel: (703)243-1697
    Email: nsf@sleepfoundation.org
    Internet: http://www.sleepfoundation.org

    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

    Opsoclonus-Myoclonus Support Network, Inc.
    2116 Casa Linda Dr.
    West Covina, CA 91791
    USA
    Tel: (626)315-8125
    Email: sandragreenberg@ hotmail.com
    Internet: http://www.omsupportnetwork.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/

    National Pediatric Myoclonus Center
    P.O. Box 19643
    Springfield, IL 62794-9643
    USA
    Tel: (217)545-7635
    Fax: (217)545-1903
    Email: omsusa@siumed.edu
    Internet: http://www.omsusa.org

    Epilepsy Canada
    2900 John St., Suite 402
    Markham
    Ontario, L3R 5G3
    Canada
    Fax: 9055139461
    Tel: 8777340873
    Internet: http://www.epilepsy.ca

    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

    Movement Disorder Society
    555 E. Wells Street
    Suite 1100
    Milwaukee, WI 53202-3823
    Tel: (414)276-2145
    Fax: (414)276-3349
    Email: info@movementdisorders.org
    Internet: http://www.movementdisorders.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: 1/20/2012
    Copyright 1986, 1987, 1988, 1990, 1991, 1992, 1993, 1996, 1999, 2007, 2009, 2012 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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