Hemophilia is a group of hereditary genetic disorders that impair the body’s ability to control blood clotting or coagulation, which is used to stop bleeding when a blood vessel is broken.
Symptoms vary with severity. In general symptoms are internal or external bleeding episodes. Patients with more severe hemophilia suffer more severe and more frequent bleeding episodes, while patients with mild hemophilia usually suffer more minor symptoms except after surgery or serious trauma. Moderate hemophiliacs have variable symptoms which manifest along a spectrum between severe and mild forms.