The best-known and most common bleeding disorders are haemophilia A (factor VIII deficiency), haemophilia B (factor IX deficiency) and von Willebrand disease. But there are many more rare bleeding disorders involving blood clotting factors and blood cells called platelets. The outlook is now the best it has ever been for people with bleeding disorders. Medicine has made huge advances. There are still no cures, but with modern treatment children born now with a bleeding disorder can live a normal lifespan and enjoy the opportunities in life that anyone else has. There is a series of factsheets that go along with this booklet, providing specific information about each bleeding disorder. This booklet does not cover haemophilia or von Willebrand disease (these are covered in separate booklets by The Haemophilia Society).