A bleeding disorder caused by low levels of clotting protein in the blood.Von Willebrand disease is often inherited, but in rare cases, it may develop later in life.Symptoms may include recurrent and prolonged nosebleeds, bleeding from the gums, increased menstrual flow and excessive bleeding from a cut.Treatment focuses on stopping or preventing bleeding episodes, typically by using medication.Von Willebrand disease (vWD) is the most common hereditary blood-clotting disorder in humans. An acquired form can sometimes result from other medical conditions.It arises from a deficiency in the quality or quantity of von Willebrand factor (vWF), a multimeric protein that is required for platelet adhesion. As well as humans, it is known to affect several breeds of dogs. The three forms of vWD are: hereditary, acquired, and pseudo or platelet type.