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Hypotonia, Benign Congenital

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Copyright 1987, 1989, 1996, 2000, 2003

NORD is grateful to Charlotte E. Thompson, MD, for assistance with the content of this report.

Synonyms of Hypotonia, Benign Congenital
  • BCH

Disorder Subdivisions



General Discussion
Benign congenital hypotonia (BCH) has been an outdated term since 1956, when the first congenital muscle disease, central core disease, was described. Now specific diagnoses can be made in most patients. As clinicians and researchers have gained greater understanding of neuromuscular diseases, the phrase has been dropped and replaced by names of specific neuromuscular disorders. Symptoms and findings associated with the group of neuromuscular disorders formerly known as benign congenital hypotonia include low muscle tone (hypotonia) at birth or in the first few months and general “floppiness” of muscles. Some of the disorders are non-progressive, which means that they do not increase in severity. Most improve over time but mild weakness persists into adulthood. Some of the disorders do progress in the adult years and may have associated problems.
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Organizations related to Hypotonia, Benign Congenital
  • Genetic and Rare Diseases (GARD) Information Center
    PO Box 8126
    Gaithersburg MD 20898-8126
    Phone #: 301-251-4925
    800 #: 888-205-2311
    e-mail: ordr@od.nih.gov
    Home page: http://rarediseases.info.nih.gov/Default.aspx
  • MUMS (Mothers United for Moral Support, Inc) National Parent-to-Parent Network
    150 Custer Court
    Green Bay WI 54301-1243
    Phone #: 920-336-5333
    800 #: 877-336-5333
    e-mail: mums@netnet.net
    Home page: http://www.netnet.net/mums/
  • March of Dimes Birth Defects Foundation
    1275 Mamaroneck Avenue
    White Plains NY 10605
    Phone #: 914-997-4488
    800 #: 888-663-4637
    e-mail: Askus@marchofdimes.com
    Home page: http://www.marchofdimes.com
  • National Institute of Neurological Disorders and Stroke (NINDS)
    P.O. Box 5801
    Bethesda MD 20824
    Phone #: 301-496-5751
    800 #: 800-352-9424
    e-mail: me20t@nih.gov
    Home page: http://www.ninds.nih.gov/
  • Pathways Awareness Foundation
    150 North Michigan Ave.,Ste.2100
    Chicago IL 60601
    Phone #: 312-893-6620
    800 #: 800-326-8154
    e-mail: friends@pathwaysawareness.org
    Home page: http://www.pathwaysawareness.org

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Last modified Wednesday, November 26, 2008