von Willebrand's Disease (vWD)

vWD is a blood disorder, a deficiency in clotting factor VIII antigen. This substance is called "Von Willebrand's factor." Dogs affected by the disease do not effectively utilize their platelets for blood clotting and therefore are more likely to have excessive bleeding episodes upon injury. This is similar to hemophilia in humans.

vWD is a common inherited disorder. Certain breeds have a higher than normal incidence of this disorder.

The main symptom of vWd is excessive bleeding, generally occuring after an injury or surgery. Dog's with Von Willebrand's disease may also develop nosebleeds or bleeding from the gums; bleeding in the stomach or intestine may also occur; and some dogs may have blood in their urine. Symptoms similar to those of arthritis may also occur if bleeding is into the joints.

• von Willebrand's Disease — Canine Inherited Disorders Database
• von Willebrand's DNA Test — Type I - Bernese Mountain Dog, Doberman Pincher, Kerry Blue Terrier, Manchester Terrier, Pembroke Welsh Corgi, Poodle and Papillon.
  VetGen scientists, in collaboration with the University of Michigan and Michigan State University, proudly announce the discovery of the mutation that causes Type I von Willebrand's Disease (vWD) and the offering of a DNA test to detect vWD in the above breeds.
• DNA Studies in Doberman von Willebrand's Disease.
• Von Willebrand's Disease in the Bernese Mountain Dog — The Bernese Mountain Dog Club of America, Inc.

Note: This section of the Canada's Guide to Dogs website is intended as a source of information only. It is not intended as a substitute for professional care. Always consult with your Veterinarian about health related matters.