| What is Hemophilia |
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About Bleeding Disorders Hemophilia results from the deficiency of one more proteins known as blood clotting factors. There are 13 clotting proteins in the body, all of which contribute to the formation of a clot. The two main forms are hemophilia A (factor VIII deficiency) and hemophilia B (factor IX deficiency). Hemophilia occurs in 1 in 5,000 live male births, of these 80% are hemophilia A and 20% are hemophilia B. The worldwide incidence of hemophilia is estimated at more than 400,000 people. Approximately 70% of people around the world do not have access to treatment.
von Willebrand disease is another genetic bleeding disorder that prevents the blood from clotting normally. It is caused by a deficient or defective blood protein known as von Willebrand factor. It occurs with equal frequence in men and women. It is estimated to affect more than two million people in the U.S. Of the three main types, type I (the mildest form of the disease) accounts for 70% of cases. Symptoms include frequent nosebleeds, a tendency to bruise easily, and excessive bleeding following surgery. In women, the disease may also cause heavy, prolonged bleeding during menstruation and excessive bleeding following childbirth. VWD is often undiagnosed or incorrectly attributed to a gynecologic condition.
About Clotting Disorders More than 11 million people in the U.S. have one of several inherited clotting disorders, known as thrombophilia. Factor V Leiden is the most common inherited form of thrombophilia. Not everyone who has thrombophilia will experience a blood clot. The development of a blood clot is called thrombosis, which is a common medical problem. Some people only need treatment when recovering from surgery, during pregnancy or when immobile for long periods in a car or airplane. Others need to take anti-clotting medications for their entire lives. For further information, please visit the Indiana Hemophilia and Thrombosis Center website at www.ihtc.org and National Hemophilia Foundation www.Hemophilia.org
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