hemophilia
Hemophilia Hemophilia is an inherited disorder that causes abnormal bleeding. ... There are two types of hemophilia. Hemophilia A is 85% more common than hemophilia B. Hemophilia A is also called classic hemophilia and hemophilia B is also called Christmas hemophilia. Hemophilia A results from a lack of a plasma protein called factor VIII, which helps blood clot. ... If you have 5% to 25% of the normal factor VIII level, you have mild hemophilia. If you have 1% to 5% of the normal level you have moderate hemophilia. If you have less than 1% you have severe hemophilia. Most people that have hemophilia have severe or moderate. ... Hemophilia B results from a lack of factor IX, which is another plasma protein that helps blood clot. Just like hemophilia A, hemophilia B can be mild, moderate, or severe. ... About 80 percent of all cases of hemophilia have an identifiable family history of the disease and in other instances, it may be a trait of a spontaneous mutation of genes. ... If there is a history of hemophilia, specific tests can be done from an umbilical cord blood sample to see if a newborn male infant has hemophilia. If there were no family history of hemophilia, an infant would not be tested for the condition.