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Hemophilia A and B are caused by a flaw in a part of a gene. This flaw affects how much clotting factor a person has and how well it works. With acquired hemophilia, clotting factors don't work right because the body makes antibodies that attack them.
The Stanford Medicine Online Second Opinion program offers you easy access to our world-class doctors. It’s all done remotely and you don’t have to visit our hospital or one of our clinics for this service. You don’t even need to leave home!