Hemophilia B: Symptoms & Signs (Factor IX Deficiency, Christmas Disease)

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Alternate Names : Factor IX Deficiency, Christmas Disease

Problems usually start in early childhood. Severe cases will cause:

bleeding problems

bruising without injury

joint bleeding leading to arthritis and deformities

internal and bowel bleeding

In someone with mild hemophilia, excessive bleeding may occur only with injury or surgery.

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Hemophilia B: Overview, Causes, & Risk Factors		Hemophilia B: Diagnosis & Tests

Author: Thomas Fisher, MD
Reviewer: Adam Brochert, MD
Date Reviewed: 09/24/01

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