What is hemophilia? In hemophilia, blood does not clot properly.
This usually happens because your body does not have enough of a
certain kind of Reference clotting factor Opens New Window. This
makes it harder for bleeding to stop. People with hemophilia may
bleed a lot after cuts, during surgery, or even after a fall.
Some people have abnormal bleeding inside their bodies for no
clear reason. There are two main types of hemophilia: -
Hemophilia A is caused by a lack of active clotting factor VIII
(8). About 1 out of every 5,000 male babies is born with
hemophilia A.Reference 1 - Hemophilia B (Christmas disease) is
caused by a lack of active clotting factor IX (9). It is less
common and affects 1 out of 30,000 male babies.Reference 1
Hemophilia usually runs in families and almost always affects
males. In rare cases, a person may get a type that does not run
in the family. This is called acquired hemophilia, and it
affects both males and females. What causes hemophilia?
Hemophilia A and B are caused by a flaw