Von Willebrands Disease in German Shepherds: Symptoms, Causes, and Treatments

Von Willebrands Disease, codenamed vWD, is a kind of inherited bleeding disorder similar in nature to hemophilia in human beings. The disorder is due to the deficiency of a protein that helps platelet in the formation of blood clots. The more specific name of this protein is von Willebrands factor antigen.

The three drug groups Cornell says to avoid

This is the most immediately useful paragraph on the page, and it is worth putting on your dog’s file at the practice.

Cornell’s instruction is direct: “Do not give drugs that interfere with normal blood clotting: aspirin, sulfa-type antibiotics, and heparin” (Cornell Comparative Coagulation Laboratory, retrieved 2026-08-12).

The first one is where accidents happen. Aspirin is in a lot of household medicine cabinets, and giving a dog “something for the pain” is a natural instinct. In a dog with vWD it makes a bleeding problem worse.

Never give any human medication to your dog without asking your vet, and say the words “my dog has von Willebrand disease” every time you are offered a prescription, including at an emergency clinic that does not hold your records.

The test, and the numbers to ask for

The usual test measures how much von Willebrand factor is in the blood, reported as vWF:Ag and given as a percentage of normal.

Cornell publishes the interpretation ranges (Cornell Comparative Coagulation Laboratory, retrieved 2026-08-12):

So ask for the number, not just “normal” or “low”. A borderline dog is managed differently from one at 20%, and a number in the notes is useful for the rest of your dog’s life, particularly before any surgery.

The three types, and which one German Shepherds get

vWD is “an inherited bleeding disorder caused by lack of von Willebrand factor protein (vWF)” (Cornell University College of Veterinary Medicine, Comparative Coagulation Laboratory, retrieved 2026-08-12). Cornell describes three forms, “defined by the quantity and structure of plasma von Willebrand factor”.

German Shepherds sit in Type 1, which is both the mildest and the most common form (retrieved 2026-08-12). That is genuinely good news, and it comes with a catch: mild means many affected dogs never show a sign until surgery.

Dog Breeds Affected by this Disease

Almost all types of dogs, including those of mixed breed, are affected by this disease. Even though Dobermans are primarily connected, in most cases they remain clinically undiagnosed since these dogs are usually carriers and there is hardly any kind of bleeding evidence. Genetic factors primarily decide the occurrence of Von Willebrands Disease in German Shepherd dogs as well as in dog breeds like Scottish Terriers and Shetland Sheepdogs. The list continues with Chesapeake Bay Retrievers, Standard Poodles, German Short-haired Pointers, and Golden Retrievers.

Signs and Symptoms of Von Willebrands Disease

Unless there’s prolonged bleeding post-injury or trauma, this disease remains unnoticed. Hemorrhage cases are common too , like bleeding from the nose, urinary bladder, vagina, or the mucous membranes of the oral passage. Some canine species might exhibit the disease through blood in stool or urine. Some other symptoms are bleeding gums or occasional limping (due to bleeding joints) similar in nature to arthritis. If the hemorrhage situation aggravates, it might even lead to death. Female dogs might face excessive bleeding after giving birth to a litter. Even though the disease is not fatal by itself, it might turn fatal due to bleeding following surgery or in case of an accident.

How can vWD be Diagnosed?

Von Willebrands Disease can be screened by a screening test called Buccal Mucosal Bleeding Time. The veterinary surgeon checks the time of bleeding through this test. Prolonged duration surely points out that there is a grave protein deficiency in the canine breed. Even the percentage of Willebrands protein in blood can be checked. An accurate measurement can suggest whether the canine species will be a carrier or will be affected.

As a pet owner, you should always take into account bleeding time if there’s an injury. In case you find bleeding is disproportionate (crossing the normal time frame) you need to consult your vet.

Treatment for Von Willebrands Disease

First point to note is that Von Willebrands Disease is not a curable one, but definitely, the situation can be brought under control by proper medical supervision under a vet doctor. In emergency situations, blood or fresh frozen plasma transfusion is the savior. If your German Shepherd is facing a hemophiliac episode, transfusion is the ideal treatment. In case the German Shepherd dog is thyroid deficient the animal needs hormone replacement therapy. If vWD occurs late in hypothyroid German Shepherds, thyroid hormone supplementation can bring an effective treatment in alleviating the disease.

Minor instances of bleeding can be managed by the application of prolonged pressure on the wounded area. Veterinary care like sutures or cautery can also be applied depending on the severity of the wound.

The donor dog can be treated with a drug called DDAVP (Desmopressin Acetate) in order to raise the level of Willebrands protein factor so that the recipient dog benefits during the transmission process. Canine response to DDAVP is varied; some dogs might not respond to the drug administration. The long-term effect of this drug is still under clinical scrutiny and debate.

Genetic counseling can prevent the transmission of the disease from parent dogs to offspring. Before breeding, you should test the Willebrands factor for both the male and female dogs. Carrier dogs should never be bred with a normal ones.

Last but not the least, injury prevention is the ultimate cure. Prevent your pets from playing hard and rough with other dogs and never allow chewing on sharp bones or sticks. When a vWD dog is suffering from bleeding gums it needs to be fed soft foods. If the dog needs surgery, the veterinary surgeon will take the required precaution to minimize bleeding just after surgery.

Medications to Avoid in vWD

To check the bleeding crisis, certain medications need to be avoided. They are Ampicillin, Antihistamines, Aspirin, Heparin, Ibuprofen, Oestrogens, Penicillin, Phenothiazine tranquilizers, Phenylbutazone, Sulphur-based antibiotics, and Theophylline. Over-the-counter medications can be administered under vet care. It has been seen that dogs with this disease can lead a perfectly normal life with proper care and treatment.

Give vWD Dog a Proper Living Environment

The environment also matters, in the sense that bleeding episodes can get aggravated if there’s some other illness and physical or emotional stress. Separation anxiety can play havoc because of the excessive emotional pain , it is thus better to keep a vWD dog always in human company. Avoid over-exercise or any kind of physical rigor.

What bleeding actually looks like

Because Type 1 is usually mild, most German Shepherds with vWD look completely normal day to day. When bleeding does show, it tends to come from mucous membranes rather than as bruising.

Cornell notes that “severe vWD causes spontaneous bleeding from the nose, mouth, and urinary, reproductive or intestinal tracts” (Cornell, retrieved 2026-08-12).

In a mildly affected dog, what owners more often notice is disproportion. Bleeding that goes on too long after a lost tooth, a nail cut slightly short, a routine spay, or a small cut that keeps reopening. The event is ordinary. The bleeding is not.

Treatment: what exists and what to plan for

There is no cure, and for most Type 1 dogs there is also nothing to take day to day. Management is about preparing for the moments that matter.

Desmopressin (DDAVP). Cornell states it “can be used to improve hemostasis in dogs with mild subtype (Type 1) VWD” (retrieved 2026-08-12). It prompts release of stored vWF, and it is most useful given before a planned procedure.

Plasma products. For significant bleeding, transfusion of plasma or cryoprecipitate supplies the missing factor directly.

Planning. The single most valuable thing you can do is make sure every procedure is planned rather than improvised. Tell the practice before the spay, the dental, the lump removal. A clinic that knows in advance can have products ready and can time desmopressin properly.

vWD or hemophilia A? They are not the same

Both are inherited bleeding disorders that turn up in German Shepherds, and they get confused constantly.

They are managed differently and bred around differently, so “a clotting problem” is not a diagnosis you can act on. Our article on hemophilia A in German Shepherds covers the other one in full.

For the wider health picture in this breed see our care guide, and for two other inherited conditions worth knowing by name, degenerative myelopathy and exocrine pancreatic insufficiency.

Living with a vWD dog, day to day

For most Type 1 German Shepherds this is a background fact rather than a daily illness. The work is in preparation, not management.

• Put it on the file at every practice you use, including out-of-hours clinics that do not hold your records.
• Say it out loud before any procedure. Spay, neuter, dental, lump removal, even a nail trim under sedation. Planned is safe. Improvised is not.
• Keep the vWF:Ag number somewhere you can find it. A photo of the report on your phone is enough.
• Keep dental care routine. Gum disease means bleeding gums, and bleeding gums are worse in a dog that cannot form a stable plug.
• Trim nails carefully, or have them done. A quicked nail is the most common everyday bleed.
• Learn what your dog’s gums normally look like. Pale gums after a bleed are the fastest signal that blood loss is significant.
• Do not raid the human medicine cabinet. See the drug list above; aspirin in particular.

None of that means restricting a healthy dog’s life. A German Shepherd with mild Type 1 vWD can train, work and play normally.

One last practical habit. Keep a small note in your phone with three things on it: the diagnosis, the most recent vWF:Ag number and its date, and the drugs to avoid. When you are standing in an unfamiliar clinic at eleven at night, being able to hand over that note instead of trying to remember it is worth more than any amount of background reading.

What it means for breeding and buying

Unlike hemophilia A, vWD is not sex-linked, so both males and females can be affected and both can pass it on. That changes what you ask.

If you are buying a puppy from a line where vWD has appeared, ask whether the parents have been tested and what their vWF:Ag values were. A breeder working with the condition will have numbers, not reassurance.

If you are breeding, test before you plan the mating rather than after a litter bleeds. Cornell’s bands give you the framework: normal at 70 and above, borderline between 50 and 69, and abnormal at 49 or below (Cornell Comparative Coagulation Laboratory, retrieved 2026-08-12).

Worth saying plainly: a borderline or affected dog is not a ruined dog. Type 1 is the mild form, most affected dogs live entirely normal lives, and the practical consequence is mostly surgical planning. The decision that matters is whether the condition gets concentrated in the next generation, and that is a breeding decision rather than a pet-ownership one.