The ABCs of Hemophilia

The ABCs of Hemophilia

You’ve been told that your child has hemophilia. But do you know what type?

Finding out what type of hemophilia your child has is essential, because the medicines needed to treat each type are different. Hemophilia A is by far the most common. Hemophilia C is very rare. Understanding how the types of hemophilia differ from each other can make you a more knowledgeable and effective advocate for your child. The table below provides a quick overview of three types of hemophilia. See also Rare Bleeding Disorders.

The ABCs of Hemophilia

Type Hemophilia A Hemophilia B Hemophilia C
Other Names
  • Classical hemophilia
  • Standard hemophilia
  • Factor VIII deficiency
  • Christmas disease (named after Stephen Christmas, a young British boy who was the first person diagnosed with the disorder)
  • Factor IX deficiency
  • Factor XI deficiency
Frequency
  • About 1 in 5,000 U.S. male births
  • About 80 percent of people with hemophilia
  • About 13,500 people in the U.S.
  • About 1 in 30,000 U.S. male births
  • Up to 20 percent of people with hemophilia
  • More than 3,000 people in the U.S.
  • About 1 in 100,000 U.S. male births
  • About 200 cases reported worldwide since its discovery in the 1950s
Gender Affected Males almost exclusively Males almost exclusively Males and females equally
Missing Factor Protein Factor VIII Factor IX Factor XI

Note: Hemophilia Galaxy does not recommend a particular treatment for specific individuals and recommends that you consult your hemophilia treatment center or physician before pursuing any course of treatment. Links to external Web sites are provided for your convenience. However, they lead to Web sites not created, managed, or maintained by Baxter Healthcare Corporation. Baxter is not responsible for, and does not necessarily endorse, the opinions or therapeutics represented on these external pages.

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