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Question

Why is factor 9 deficiency called Christmas disease?


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Solution

Christmas disease:

  1. Christmas disease is caused due to the lack of protein factor 9 in the blood.
  2. Factor 9 is a naturally produced protein in the body that facilitates the blood to form clots hence stopping bleeding.
  3. Factor 9 injections are also used to treat haemophilia B.
  4. The deficiency of factor 9 protein is known as Christmas disease as the first person to be diagnosed with the disorder in the year 1952, was named Stephen Christmas.

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