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Christmas disease

   Also found in: Medical, Legal, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
Christmas disease
n.
A type of hemophilia that is caused by a deficiency of factor IX.
[After Stephen Christmas, a 20th-century British boy who was first diagnosed with it.]
Christmas disease
n
(Medicine / Pathology) a relatively mild type of haemophilia, caused by lack of a protein (Christmas factor) implicated in the process of blood clotting
[named after S. Christmas, the first patient suffering from the disease who was examined in detail]
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.Christmas disease - a clotting disorder similar to hemophilia A but caused by a congenital deficiency of factor IX
haemophilia B, hemophilia B
bleeder's disease, haemophilia, hemophilia - congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son


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Hemophilia B, also known as Christmas Disease, is caused by a deficiency of a blood plasma protein called factor IX that affects the clotting property of blood.
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