What are the three types of haemophilias?

Haemophilia can be categorized into three types based on the deficiency or dysfunction of specific clotting factors. Here are the three types of haemophilia:

1. Haemophilia A: Haemophilia A is the most common type of haemophilia, accounting for approximately 85% of cases. It is caused by a deficiency or abnormality in the clotting factor VIII (also known as antihemophilic factor). This leads to impaired blood clotting and an increased tendency to bleed.

2. Haemophilia B: Haemophilia B is less common compared to haemophilia A and accounts for approximately 15% of cases. It is caused by a deficiency or abnormality in the clotting factor IX (Christmas factor). Similar to haemophilia A, individuals with haemophilia B experience prolonged bleeding due to the reduced ability of the blood to form stable clots.

3. Haemophilia C: Haemophilia C is a rare type of haemophilia that is caused by a deficiency or abnormality in the clotting factor XI (plasma thromboplastin antecedent). It is also known as Rosenthal syndrome. While haemophilia C shares some similarities with haemophilia A and B in terms of prolonged bleeding, it is generally milder, and the symptoms may be less severe.