Von Willebrand disease
Von Willebrand disease is a lifelong bleeding disorder in which your blood doesn't clot well. People with the disease have low levels of von Willebrand factor, a protein that helps blood clot, or the protein doesn't perform as it should.
Most people with the disease are born with it, having inherited it from one or both parents. However, warning signs, such as heavy bleeding after a dental procedure, might not show up for years.
Von Willebrand disease can't be cured. But with treatment and self-care, most people with this disease can lead active lives.