Paramyotonia Congenita

National Organization for Rare Disorders, Inc.

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It is possible that the main title of the report Paramyotonia Congenita 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.


  • Eulenburg Disease
  • Myotonia Congenita Intermittens
  • Paralysis Periodica Paramyotonica
  • Paramyotonia Congenita of Von Eulenburg
  • Von Eulenburg Paramyotonia Congenita

Disorder Subdivisions

  • None

General Discussion

Paramyotonia congenita is a rare muscular disorder inherited as an autosomal dominant trait. This nonprogressive disorder is characterized by a condition in which the muscles do not relax after contracting (myotonia). Symptoms can be triggered by exposure to the cold. There are also intermittent periods of a type of paralysis in which there is no muscle tone (flaccid paresis). This condition does not necessarily coincide with exposure to cold temperatures or myotonia. There is no wasting (atrophy) or increase in bulk (hypertrophy) of muscles with this disorder.

Supporting Organizations

Child Neurology Foundation

201 Chicago Ave, #200
Minneapolis, MN 55415
Tel: (952)641-6100
Fax: (952)881-6276
Tel: (877)263-5430

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

Muscular Dystrophy Association

3300 East Sunrise Drive
Tucson, AZ 85718-3208
Tel: (520)529-2000
Fax: (520)529-5300
Tel: (800)572-1717

Muscular Dystrophy Association of New Zealand, Inc.

PO Box 16-238
New Zealand
Tel: 98150247
Fax: 92777540
Tel: 800800337

Muscular Dystrophy Australia

111 Boundary Road
North Melbourne
VIC 3051
Tel: 61393209555
Fax: 61393209595
Tel: 1800656632

Muscular Dystrophy Campaign

61 Southwark Street
London, SE1 0HL
United Kingdom
Tel: 2078034800

Muscular Dystrophy Canada

2345 Yonge Street Suite 900
Ontario, M4P 2E5
Tel: 4164880030
Fax: 4164887523
Tel: 866MUSCLE8

NIH/National Institute of Arthritis and Musculoskeletal and Skin Diseases

Information Clearinghouse
One AMS Circle
Bethesda, MD 20892-3675
Tel: (301)495-4484
Fax: (301)718-6366
Tel: (877)226-4267

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 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 or email

Last Updated:  12/13/1969
Copyright  2007 National Organization for Rare Disorders, Inc.