“Von Willebrand disease (VWD) is almost always inherited. “Inherited” means that the disorder is passed from parents to children though genes. You can inherit type 1 or type 2 VWD if only one of your parents passes the gene on to you. You usually inherit type 3 VWD only if both of your parents pass the gene on to you. Your symptoms may be different from your parents’ symptoms.”

NIH-National Heart Lung and Blood Institute