von Willebrand Disease (vWD) is a genetic disorder that affects the body's blood clotting ability. This condition is also known as von Willebrand's syndrome, von Willebrand-Jurgens disease, or simply VWD. The condition is named after Erik von Willebrand, a Finnish physician who first described it in 1926. vWD is caused by a deficiency or malfunctioning of von Willebrand factor (vWF), a protein that helps the blood clot. This leads to abnormal bleeding episodes, including nosebleeds, heavy periods, and bruising. While the condition is relatively rare, understanding the synonyms for von Willebrand disease is important for both diagnosis and treatment.