General Myoclonus

National Organization for Rare Disorders, Inc.

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
Tel: (301)459-3700
Fax: (301)577-2684
Tel: (800)332-1000
TDD: (800)332-2070
Email: info@efa.org
Internet: http://www.epilepsyfoundation.org

Opsoclonus-Myoclonus Support Network, Inc.
725 North Street
Jim Thorpe, PA 18229
USA
Tel: (626)919-2448
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
Email: me20t@nih.gov
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
2255B Queen St E, Suite 336
Toronto
Ontario, M4E 1G3
Canada
Tel: (877) 734-0873
Fax: (905) 764-1231
Tel: 8777340873
Email: epilepsy@epilepsy.ca
Internet: http://www.epilepsy.ca

MUMS National Parent-to-Parent Network
150 Custer Court
Green Bay, WI 54301-1243
USA
Tel: (920)336-5333
Fax: (920)339-0995
Tel: (877)336-5333
Email: mums@netnet.net
Internet: http://www.netnet.net/mums/

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.

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