Diseases

Hemophilia- B

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Hemophilia due to deficiency of coagulation factor ix in the blood, which results in prolonged oozing after minor and major injuries, tooth extractions, or surgery. ... Also called christmas disease (named for the first patient with the disease to be studied in detail).

SYMPTOMS

Bleeding into joints with associated pain and swelling., Blood in the urine or stool., Bruising., Gastrointestinal tract and urinary tract bleeding., Nosebleeds., Prolonged bleeding from cuts, tooth extraction, and surgery., Bleeding that starts without cause.

CAUSES

Hemophilia b, also called factor ix (fix) deficiency or christmas disease, is a genetic disorder caused by missing or defective factor ix, a clotting protein. Although it is passed down from parents to children, about 1/3 of cases are caused by a spontaneous mutation, a change in a gene.