Hemophilia B

Alternative names:

Christmas disease; factor IX hemophilia

Symptoms:

• nosebleed - symptom
• bruising
• spontaneous bleeding
• bleeding into joints and associated pain and swelling
• gastrointestinal tract and urinary tract hemorrhage
• blood in the urine or stool
• prolonged bleeding from cuts, tooth extraction, and surgery
• excessive bleeding following circumcision

Signs and tests:

Coagulation studies involving many tests are performed if the person tested is the first one in the family to have a bleeding disorder. Once the defect has been identified, other family members will need less testing to diagnose the disorder.

• PTT is prolonged.
• Prothrombin time is normal.
• Bleeding time is normal.
• Fibrinogen level is normal.
• Serum factor IX is reduced.