|
|
 |
|
|
|
|
 |
 |
 |
 |
|
|
 |
 |
 |
| Hemophilia is a bleeding disorder that prevents blood from clotting properly. Clotting is what makes bleeding stop, because the clot acts like a plug at the site of the injury. When someone bleeds, the body has the ability to stop the bleeding by forming a clot—so that healing can begin. But people with hemophilia might need to see a doctor or use special treatment to make their blood clot. While minor cuts and scrapes can probably be cared for through standard first aid, it’s the bleeding inside the body—into muscles and joints—that is the biggest worry to people with hemophilia. For more information about blood clotting, click here. |
 |
 |
 |
 |
| In the blood, there are 13 proteins called clotting factors that work together in a series of steps during the blood-clotting process. There are two main types of hemophilia: |
 |
 |
 |
 |
People with hemophilia A (also called "classical hemophilia") don't have enough, or any, of clotting factor VIII (factor 8) |
 |
 |
 |
 |
People with hemophilia B (also called "Christmas disease") don't have enough, or any, of clotting factor IX (factor 9) |
|
 |
 |
 |
 |
| In all types of hemophilia, there are 3 levels of severity, which depend on how much of a particular clotting factor occurs naturally in the blood. Normal levels of factor VIII or factor IX vary from 50%–150%. The levels of severity are: mild, moderate, and severe. |
 |
| Mild: |
The amount of the particular clotting factor in the blood is between 6% and 49% of normal levels. The bleeding problems that this person will likely experience would occur after a major injury or surgery. These patients may, at times, not be diagnosed until adulthood due to the infrequency of major bleeding episodes. |
 |
| Moderate: |
The amount of the particular clotting factor in the blood is between 1% and 5% of normal levels. This person may experience more than usual bleeding following a minor injury or surgery. Bleeding into joints is also possible. |
 |
| Severe: |
The amount of a particular clotting factor is less than 1% of normal levels. People with severe hemophilia will experience bleeding more often and for longer than expected after a minor injury. They often experience spontaneous bleeding episodes for what seems to be no apparent reason. Bleeding typically occurs in the joints and muscles. Severe hemophilia is usually diagnosed in the first year of life. |
|
|
|
 |
 |
 |
|
|
|
|
|
|
|