What Causes Bleeding?
When a cut or other injury happens to the body, blood begins to flow from damaged blood vessels. Right away, a process called coagulation starts. Coagulation involves many clotting factors in the blood.10
Normally, the clotting factors cause cells to gather at the site of the injury to form a clot, which acts like a plug to stop the flow of blood. The clot stays in place until the injury is healed.10
In people with hemophilia, some of the clotting factors are missing, and the clotting process does not work as it should. Bleeding will continue longer than it would in a person whose factor levels were normal.3,10
Hemophilia is treated by taking factor VIII or factor IX as medication. This helps the body make clots and stop bleeding. In severe hemophilia, greater amounts of factor are taken during treatments in order to stop bleeding.3,7