Christmas disease

Below you will find more information about Christmas disease from Medigest. If you believe that you are suffering from any of the symptoms of Christmas disease it is important that you obtain an accurate diagnosis from a medical professional to ensure that you obtain the correct medication or treatment for your condition. There are medical conditions that carry similar symptoms associated with Christmas disease and therefore the information provided by Medigest is offered as a guideline only and should never be used in preference to seeking professional medical advice. The information relating to Christmas disease comes from a third party source and Medigest will not be held liable for any inaccuracies relating to the information shown.


Christmas disease, scientifically known as Hemophilia B, is a blood-clotting illness brought about by a mutation in the Factor IX gene which causes the lack of Factor IX. It is the second and less prevalent form of Hemophilia named after Stephen Christmas, the first patient diagnosed with the disease.


Christmas disease was first treated by replacing the missing factor to the blood in order for it to coagulate. However the coagulation factor concentrates used were discovered to be potential carriers of viruses like HIV and hepatitis. Nowadays Christmas disease is treated with genetically engineered coagulation factors in order to avoid the acquisition of viruses.


Classic Hemophilia occurs due to a substance created by the genetic mutation called anti-hemophilic globulin. An offspring of a female carrier and a male hemophiliac also produces another hemophiliac, but with different blood-clotting characteristics, thus the name Hemophilia B, or Christmas disease.


Hemophilia B is an X-linked recessive trait, as the factor IX gene can be found in the X chromosome. Only males are affected by the disease, while females serve as its carriers.

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