Introduction
Hemophilia A is an X-linked congenital deficiency of coagulation factor VIII and is characterized by spontaneous or prolonged bleeding after trauma. Individuals with the most severe form, hemophilia A, typically develop symptoms during infancy and get diagnosed by a demonstration of serum coagulation factor VIII levels that are <1% of the normal. These individuals require lifelong plasma-derived or recombinant coagulation factor concentrate routinely or prior to surgical procedures to prevent bleeding and are usually excluded from contact sports or other activities or professions with a high risk of trauma and resultant bleeding. It is very unusual for the severe form of hemophilia A to present in an adult, who reports no prior abnormal bleeding symptoms.