National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Acquired Hemophilia is not the name you expected.
Acquired hemophilia (AH) is a rare autoimmune disorder characterized by bleeding that occurs in patients with a personal and family history negative for hemorrhages. Autoimmune disorders occur when the body's immune system mistakenly attacks healthy cells or tissue. In AH, the body produces antibodies (known as inhibitors) that attack clotting factors, most often factor VIII. Clotting factors are specialized proteins required for the blood to clot normally. Consequently, affected individuals develop complications associated with abnormal, uncontrolled bleeding into the muscles, skin and soft tissue and during surgery or following trauma. Specific symptoms can include nosebleeds (epistaxis), bruising throughout the body, solid swellings of congealed blood (hematomas), blood in the urine (hematuria) and gastrointestinal or urogenital bleeding. AH can potentially cause severe, life-threatening bleeding complications in severe cases. In approximately 50% of patients, there is an identifiable underlying clinical condition; in the other 50% no cause is known (idiopathic).
AH is different from congenital hemophilia, a group of rare genetic disorders caused by congenital deficiency of certain clotting factors. The main form of hemophilia is hemophilia A (classic hemophilia), which is an X-linked disorder that mostly affects males but can also affect females. It is caused by deficiency or inactivation of factor VIII, the same clotting factor that is affected in most individuals of AH. Although both disorders involve deficiency of the same clotting factor, the bleeding pattern is quite different. The reason the bleeding patterns differ between these disorders is not fully understood.
Canadian Hemophilia Society
- 301-666 Sherbrooke Street West
- Montreal, QC H3A 1E7
- Tel: 5148480503
- Fax: 5148489661
- Tel: 8006682686
- Email: email@example.com
- Website: http://www.hemophilia.ca
Children's Cancer & Blood Foundation
- 333 East 38th Street, Suite 830
- New York, NY 10016-2745
- Tel: (212)297-4336
- Fax: (212)297-4340
- Email: firstname.lastname@example.org
- Website: http://www.childrenscbf.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
- Website: http://rarediseases.info.nih.gov/GARD/
Hemophilia Federation of America
- 210 7th St. SE
- Suite 200B
- Washington, DC 20003
- Tel: (202)675-6984
- Fax: (202)675-6983
- Tel: (800)230-9797
- Email: email@example.com
- Website: http://www.hemophiliafed.org
Irish Haemophilia Society
- First Floor
- Cathedral Court
- Dublin, 7
- Tel: 353016579900
- Fax: 353016579901
- Email: firstname.lastname@example.org
- Website: http://www.haemophilia.ie/
NIH/National Heart, Lung and Blood Institute
- P.O. Box 30105
- Bethesda, MD 20892-0105
- Tel: (301)592-8573
- Fax: (301)251-1223
- Email: email@example.com
- Website: http://www.nhlbi.nih.gov/
National Hemophilia Foundation
- 116 West 32nd Street, 11th Floor
- New York, NY 10001
- Tel: (212)328-3700
- Fax: (212)328-3777
- Tel: (800)424-2634
- Email: firstname.lastname@example.org
- Website: http://www.hemophilia.org
World Federation of Hemophilia
- 1425, boul. René-Lévesque O.
- Bureau 1010
- Montréal, Québec, H3G 1T7
- Tel: +1 (514) 875-7944
- Fax: +1 (514) 875-8916
- Email: email@example.com
- Website: http://www.wfh.org/en/page.aspx?pid=492
For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, 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.
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.
Last Updated: 7/19/2016
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