My WebMD Sign In

Please enter email address

Enter your password

Keep me signed in on this computer

Show more Information

If you select "Keep me signed in on this computer", you can stay signed in to WebMD.com on this computer for up to 2 weeks or until you sign out. This means that a cookie will stay on your computer even when you exit or close your browser which may reduce your levels of privacy and security. You should never select this option if you're using a publicly accessible computer, or if you're sharing a computer with others. Even if you select this option there are some features of our site that still require you to log in for privacy reasons.

Forget your password? Having trouble signing in?

Why should I
sign up for WebMD?

With a WebMD Account you can:

Track your way to weight loss success
Manage your family's vaccinations
Join the conversation

See more benefits Sign Up

Why WebMD?

My WebMD

Show Menu

Facebook Twitter Pinterest

WebMD Home

Pain Management Health Center

Email a Friend

Print Article

Pain Management Trends:

Pain Management Health Center

Tools & Resources

Font Size

Antithrombin Deficiency

Important
It is possible that the main title of the report Antithrombin Deficiency 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.

Synonyms

AT 3
AT III Deficiency
Thrombophilia, Hereditary, Due to AT III

Disorder Subdivisions

Antithrombin III Deficiency, Classical (Type I)
AT III Variant IA
AT III Variant Ib

General Discussion

Antithrombin deficiency is a blood disorder characterized by the tendency to form clots in the arteries and/or veins (thrombosis). An inherited tendency to thrombosis is known as thrombophilia. Antithrombin is a substance in the blood that limits the blood's ability to clot (coagulation). In people with congenital antithrombin deficiency, there is usually a reduced amount of this substance in the blood due to a genetic abnormality. Antithrombin deficiency may also be acquired; in such cases, the disorder may be reversible with treatment.

Resources

March of Dimes Birth Defects Foundation
1275 Mamaroneck Avenue
White Plains, NY 10605
Tel: (914)997-4488
Fax: (914)997-4763
Tel: (888)663-4637
Email: Askus@marchofdimes.com
Internet: http://www.marchofdimes.com

American Liver Foundation
39 Broadway, Suite 2700
New York, NY 10006
USA
Fax: (212)483-8179
Tel: (800)465-4837
Email: http://www.liverfoundation.org/contact/
Internet: http://www.liverfoundation.org

NIH/National Heart, Lung and Blood Institute
P.O. Box 30105
Bethesda, MD 20892-0105
Tel: (301)592-8573
Fax: (301)251-1223
Email: nhlbiinfo@rover.nhlbi.nih.gov
Internet: http://www.nhlbi.nih.gov/

Vascular Disease Foundation
1075 S. Yukon Street
Suite 320
Lakewood, CO 80226
Tel: (303)989-0500
Fax: (303)989-0200
Tel: (888)833-4463
Email: info@vdf.org
Internet: http://www.vdf.org

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/AboutGARD.aspx

National Blood Clot Alliance
120 White Plains Road
Suite 100
Tarrytown, NY 10591
Tel: (914)220-5040
Tel: (877)466-2568
Email: info@stoptheclot.org
Internet: http://www.stoptheclot.org/index.htm

Venous Disease Coalition
1075 S. Yukon Street, Suite 320
Suite 320
Lakewood, CO 80226
Tel: (303)989-0500
Fax: (303)989-0200
Tel: (888)833-4463
Email: info@venousdiseasecoalition.org
Internet: http://www.venousdiseasecoalition.org

For a Complete Report:

This is an abstract of a report from the National Organization for Rare Disorders, Inc. ® (NORD). A copy of the complete report can be obtained for a small fee by visiting the NORD website. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational treatments (if available), and references from medical literature. For a full-text version of this topic, see http://www.rarediseases.org/search/rdblist.html

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: 2/6/2009
Copyright 1986, 1987, 1990, 1992, 1993, 1996, 2000, 2001, 2002, 2006, 2007, 2009 National Organization for Rare Disorders, Inc.

WebMD Medical Reference from the National Organization of Rare Disorders

Last Updated: May 16, 2012

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.