Below is an instruction from Human. Write a response.
    ### Instruction:
    How to diagnose Von Willebrand Disease ?
    ### Response:
    Early diagnosis of von Willebrand disease (VWD) is important to make sure that you're treated and can live a normal, active life.
                
Sometimes VWD is hard to diagnose. People who have type 1 or type 2 VWD may not have major bleeding problems. Thus, they may not be diagnosed unless they have heavy bleeding after surgery or some other trauma.
    