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Christmas disease
(redirected from hemophilia B)

   Also found in: Dictionary/thesaurus, Medical, Acronyms, Wikipedia 0.01 sec.
Christmas disease [′krisĀ·məs di‚zēz]
(medicine)
A hereditary, sex-linked, hemophilia-like disease involving failure of the clotting mechanism due to a deficiency of Christmas factor. Also known as Factor IX deficiency.


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There are three types of hemophilia - Hemophilia A, which is caused by non-functioning clotting Factor VII, is the most common; Hemophilia B is caused by non-functioning clotting Factor IX; and Hemophilia C, which is caused by non-functioning clotting Factor XI.
CASE SUMMARY A 16-year-old boy with a medical history of hemophilia B presented to the emergency department with a 2-day history of left knee pain and swelling.
Hemophilia B is characterized by deficient or defective factor IX.
 
 
 
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