How serious is Hemophilia A. Today I find out that two of my cousins 14 and 11 years old have it. What is the name of the shot t

There are different levels of hemophilia: mild, moderate, and severe:
• People with mild hemophilia (6% to 49% factor level) usually have problems with bleeding only after serious injury, trauma, or surgery. In many cases, mild hemophilia is not discovered until an injury or surgery or tooth extraction results in unusual bleeding. The first episode may not occur until adulthood.

• People with moderate hemophilia, about 15% of the hemophilia population, tend to have bleeding episodes after injuries. They may also experience occasional bleeding episodes without obvious cause. These are called "spontaneous bleeding episodes."

• People with severe hemophilia, about 60% of the hemophilia population, have bleeding following an injury and may have frequent spontaneous bleeding episodes, often into the joints and muscles.

Treatment

Standard treatment involves replacing the missing clotting factor. The amount of factor VIII concentrates needed depends on how severe the bleeding is, the site of the bleeding, and the size of the patient.

Mild hemophilia may be treated with desmopressin (DDAVP), which helps the body release factor VIII that is stored within the lining of blood vessels.

To prevent a bleeding crisis, people with hemophilia and their families can be taught to give factor VIII concentrates at home at the first signs of bleeding. People with severe forms of the disease may need regular preventative treatment.

Depending on the severity of the disease, DDAVP or factor VIII concentrate may be given before having dental extractions and surgery to prevent bleeding.

Immunization with hepatitis B vaccine is necessary because of the increased risk of exposure to hepatitis due to frequent blood infusions.

Patients who develop an inhibitor to factor VIII may require treatment with other clotting factors such as factor VIIa, which can help with clotting even without any factor VIII.

Thank you for the information. Would you please help me to understand the cost of the treatment to patient that develop an inhibitor factor VIII.  Thanks you.