Type 1
This is the most common and mildest form of VWD, in which a person has lower than normal levels of VWF. A person with Type 1 VWD also might have low levels of factor VIII, another type of blood-clotting protein. This should not be confused with hemophilia, in which there are low levels or a complete lack of factor VIII but normal levels of VWF.
Type 2
With this type of VWD, although the body makes normal amounts of the VWF, the factor does not work the way it should. Type 2 is further broken down into four subtypes―2A, 2B, 2M, and 2N―depending on the specific problem with the person’s VWF. Because the treatment is different for each type, it is important that a person know which subtype he or she has.
Type 3
This is the most severe form of VWD, in which a person has very little or no VWF and low levels of factor VIII.
Source: Centers for Disease Control and Prevention