Hemophilia is used to describe a group of inherited genetic diseases that affect the ability of a mammal's body to control thrombogenesis. Thrombogenesis is the way blood clots, which plays an important role in hemostasis. Two common forms of hemophilia are A and B. (1) In a person with A (also known as classic hemophilia), clotting factor VIII does not exist in sufficient quantity or is completely absent. In a person with hemophilia B (otherwise known as Christmas disease), the clotting factor is not present enough or is also completely absent. People with this condition don't bleed a lot, they just bleed for a longer period of time. All people with hemophilia A or B are born with the condition because it is a hereditary condition passed down from generation to generation. Very few cases of hemophilia are not genetic and therefore result from a spontaneous genetic mutation which is then passed on. A 10th century Arab physician; Abu al-Qasim al-Zahrawi observed a family that suffered a great loss of men dying from hemorrhage from a small wound. American Dr. Ott...