Hemophilia is a genetically inherited bleeding disorder. There are two types of hemophilia: hemophilia A, or clotting factor VIII deficiency, and hemophilia B, or clotting factor IX deficiency. The degree of deficiency varies from mild to severe. About one third of hemophilia cases occur with no previous family history; this is called sporadic hemophilia. It is assumed that these cases are the result of genetic mutation.
Organizations concerned with activities related to Hemophilia.