What is the difference between hemophilia a and b?

Clotting factor.: Hemophilia a results from a deficiency in clotting factor viii. In contrast, hemophilia b (also called christmas disease) is caused by a deficiency in clotting factor ix. Hemophilia a is more common than hemophilia b, and people with hemophilia a are more likely to suffer from severe disease. It would be impossible to distinguish the two on clinical presentation alone.

Hemophilia: is a family of clotting disorders which result in decreased ability to clot the blood. The difference between Hemophilia A and B is which of the clotting factors the patient is missing. Hemophilia A patients are missing Factor VIII. Hemophilia B patients are missing Factor IX. Hope this helps!

Hemophilias: Hemophilia is a bleeding disorder, usually inherited with an x-linked recessive inheritance pattern, which results from the deficiency of a coagulation factor. Hemophilia a results from the deficiency of clotting factor viii. Hemophilia b results from the deficiency of clotting factor ix. Acquired hemophilia is a separate noninherited condition, rarer than congenital hemophilia, autoimmune.

Bleeding disorder: Hemophilia a is due to the absence of clotting factor viii (most common) hemophilia b is due to the absence of clotting factor ix (less common).