Explore Treatments for Hemophilia

Hemophilia is a rare genetic bleeding disorder caused by a deficiency of certain blood clotting proteins, called factor VIII or factor IX. This deficiency leads to delayed or prolonged bleeding. People with hemophilia A have low levels of factor VIII whereas people with hemophilia B have low levels of factor IX. The severity of the disorder depends on how much clotting factor is missing. The lower the level, the higher the risk of bleeding. Bleeding can happen spontaneously or after an injury, surgery, or trauma. Bleeding inside the head or organs is especially dangerous. Repeated bleeding into joints and muscles can cause long-term damage to those areas.