A Case of Acquired Hemophilia A with Maxillary Osteitis

Acquired hemophilia A (AHA), is a rare bleeding disorder with an incidence of approximately 1 per million/year.The disease is caused by the development of autoantibodies directed against clotting factor VIII and associated with an increased morbidity and mortality. In 50% of cases, FVIII autoantibodies occur in patients lacking any relevant concomitant disease; the remaining cases may be associated with postpartum period, autoimmune diseases, underlying hematologic or solid cancers, and infections.