The most common symptom of hemophilia is bleeding, particularly into the joints and muscles. When a person with hemophilia is injured, he does not bleed faster than a person without hemophilia, but it takes longer for bleeding to stop. Bleeding also may start again several days after an injury or surgery.
Small cuts or surface bruises usually are not a problem, but deeper injuries may result in bleeding episodes that can lead to permanent disability unless they are treated promptly.
Other symptoms of hemophilia include easy bruising, prolonged nosebleeds or vomiting of blood.
Hemophilia may occur in mild, moderate and severe forms, based on both the patient's symptoms and the level or amount of clotting factor in the blood.
A person's severity of hemophilia does not change over time, because factor level is determined by genetics.
Reviewed by health care specialists at UCSF Medical Center.