Christmas disease is another name for :
Correct answer: A. Haemophilia-B
- A. Haemophilia-B
- B. Hepatitis-B
- C. Down's syndrome
- D. Sleeping sickness.
Explanation
Haemophilia B, a type of haemophilia, is also known as Christmas disease. It is due to a deficiency of a blood coagulation factor known as the Christmas factor (Factor IX). Christmas was the individual (20th century) in whom the factor was first identified. Haemophilia B is a blood disorder that prevents it from clotting.
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