“CDC states the following about hemophilia:
- As many as 33,000 males are estimated to be living with hemophilia in the United States.
- Hemophilia is associated with spontaneous (unexplained) bleeding and excessive bleeding after injury. This can include repeated bleeding within joints that can lead to chronic joint disease.
- Bleeding symptoms in females with hemophilia are usually milder than symptoms in males with hemophilia. Nonetheless, females with hemophilia have been found to have reduced joint range of motion compared with females with no bleeding disorder.
Incidence and prevalence
-
- The exact number of people living with hemophilia in the United States is not known. A CDC study that used data collected on patients receiving care in federally funded hemophilia treatment centers during the period 2012–2018 estimated that as many as 33,000 males in the United States are living with the disorder.
- Hemophilia A (low levels of clotting factor VIII [8]) is three to four times as common as hemophilia B (low levels of clotting factor IX [9]).
- Among all males with hemophilia, just over 4 in 10 have the severe form of the disorder.
Center for Disease Control and Prevention