Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) von Willebrand disease ?
    ### Response:
    Von Willebrand disease is a bleeding disorder that slows the blood clotting process, causing prolonged bleeding after an injury. People with this condition often experience easy bruising, long-lasting nosebleeds, and excessive bleeding or oozing following an injury, surgery, or dental work.
    