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Diseases

Genetic and Rare Diseases Information Center (GARD)

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Chiari malformation type 1

*

* Not a rare disease

Other Names for this Disease

  • Arnold Chiari malformation type I
  • Chiari malformation type I
  • Chiari type I malformation
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Overview

Chiari malformation type 1 is a structural abnormality of the cerebellum, the part of the brain that controls balance. It involves the extension of the lower part of the cerebellum into the foramen magnum (the large hole at the base of the skull which allows passage of the spinal cord), without involving the brainstem. Normally, only the spinal cord passes through this opening. This malformation is the most common type of Chiari malformation and may not cause any symptoms.[1] Depending on the symptoms present and severity, some individuals may not require treatment while others may require pain medications or surgery.[2][3]
Last updated: 3/12/2012

References

  1. Chiari Malformation Fact Sheet. National Institute of Neurological Disorders and Stroke Web site. 2009; http://www.ninds.nih.gov/disorders/chiari/detail_chiari.htm. Accessed 12/22/2009.
  2. Chiari Malformation Fact Sheet. NINDS. February 1, 2012; http://www.ninds.nih.gov/disorders/chiari/detail_chiari.htm#194173087. Accessed 3/11/2012.
  3. Peyman Pakzaban. Chiari Malformation. eMedicine. March 2, 2012; http://emedicine.medscape.com/article/1483583-overview. Accessed 3/11/2012.
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Basic Information

In Depth Information

  • Medscape Reference provides information on this topic. Click on the link to view this information. You may need to register to view the medical textbook, but registration is free.
  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
  • PubMed is a searchable database of medical literature and lists journal articles that discuss Chiari malformation type 1. Click on the link to view a sample search on this topic.
Other Names for this Disease
  • Arnold Chiari malformation type I
  • Chiari malformation type I
  • Chiari type I malformation
See Disclaimer regarding information on this site. Some links on this page may take you to organizations outside of the National Institutes of Health.