As hemophilia is an hereditary disorder, people are affected at birth. This means that children can have hemophilia. In fact, hemophilia is often diagnosed in the first year of life. Hemophilia A and B can be divided into three classifications. There is often no obvious cause for the bleeding - it just happens.
Moderate hemophiliacs bleed less often.
Their hemorrhages are often the result of minor trauma, such as a sports injury. Mild hemophiliacs have even fewer hemorrhages. They may be aware of their bleeding problem only in the case of surgery, a tooth extraction or a serious injury.