What Is It?
Hemophilia is an inherited disorder. It prevents blood from clotting properly. People with hemophilia bleed longer than usual. This bleeding can range from mild to severe. In severe cases, people with hemophilia can bleed to death.
Because of the way in which hemophilia is inherited, it almost exclusively affects men. Women can get it, but it is very rare.
Clotting is the process in which the blood thickens or congeals. This prevents a cut or other injury from bleeding endlessly.