Understanding Von Willebrand Disease in Dogs

Von Willebrand disease (vWD) is the most common inherited bleeding disorder in dogs, a condition where the blood can’t clot properly because of a shortage or malfunction of a key clotting protein. If your dog has been diagnosed, or you’re noticing signs like prolonged bleeding or frequent nosebleeds, it’s normal to feel concerned. But, with the right information, you can help your dog live a healthy and full life.

What is von Willebrand disease?

Von Willebrand disease (vWD) is the most common inherited bleeding disorder in dogs. It happens when von Willebrand factor (vWF), a protein that acts like glue, holding platelets together at the site of a wound so a clot can form, is either missing, reduced, or doesn’t work correctly. Without enough functional vWF, your dog’s blood can’t seal injuries properly, leading to prolonged or unexpected bleeding.

It’s important to know that vWD doesn’t lower the number of platelets your dog has, it just affects how they function. The condition can range from mild to severe depending on the type of vWD your dog has: Type 1, Type 2, or Type 3.

Symptoms of vWD in dogs

Many dogs with von Willebrand disease don’t show obvious signs until a bleeding event happens. Here’s what to watch for:

• Prolonged bleeding from small injuries, cuts, or after surgery
• Frequent or unexpected nosebleeds
• Bleeding gums
• Blood in urine or stool
• Excessive bleeding during heat cycles or after nail trims
• Skin bruising

Keep an eye out for these symptoms, especially if your dog belongs to a breed predisposed to vWD, like Doberman Pinschers or Scottish Terriers.

Causes and risk factors

Von Willebrand disease is a genetic condition, meaning dogs inherit it from their parents. Certain breeds are more likely to have specific types of vWD:

• Type 1: The most common form where the body produces vWF, but not enough of it Common in Doberman Pinschers, Pembroke Welsh Corgis, and Golden Retrievers. Symptoms tend to be mild to moderate.
• Type 2: Not all of the proteins that make up vWF are present, or they don’t function correctly, causing moderate to severe bleeding tendencies. Seen in German Wirehaired Pointers.
• Type 3: The most severe form, vWF is almost completely absent from the body. Affects Scottish Terriers and Chesapeake Bay Retrievers. This type carries the highest risk of life-threatening bleeding.

How is vWD diagnosed?

Your vet may recommend several tests to confirm von Willebrand disease and assess its severity:

• vWF antigen test: A blood test that measures the level of von Willebrand factor in your dog’s blood. Lower levels suggest vWD.
• BMBT (Buccal Mucosal Bleeding Time): A screening test where the vet makes a tiny incision inside your dog’s cheek to see how long it takes for bleeding to stop. A longer-than-normal bleed time signals a clotting problem.
• DNA testing: Useful for identifying carriers of vWD, especially in at-risk breeds.

Early diagnosis is key to managing vWD effectively and preparing for potential bleeding episodes or surgeries.

Managing vWD in dogs

While there’s no cure for von Willebrand disease, you can take steps to manage the condition and help reduce bleeding risks. These approaches may include:

• Desmopressin (DDAVP): This medication may temporarily improve clotting in some dogs with Type 1 vWD.
• Plasma transfusions: Fresh frozen plasma or cryoprecipitate, a concentrated blood product especially rich in vWF, can provide immediate clotting support during a bleeding episode or before surgery.
• Avoid certain medications: Drugs like NSAIDs, aspirin, and some antibiotics can worsen bleeding and should be avoided unless absolutely necessary.
• Plan ahead for surgeries: Always inform your vet about your dog’s vWD diagnosis before any procedure.

With proper care and precautions, most dogs with von Willebrand disease, especially those with Type 1, can lead normal and active lives.

Is vWD covered by pet insurance?

Yes, von Willebrand disease (vWD) is covered under Lemonade Pet’s base accident and illness policy, as long as it isn’t pre-existing. That includes eligible costs like diagnostic testing, plasma transfusions, and emergency care that may be needed when bleeding episodes occur.

Managing vWD often means regular vet visits to monitor your dog’s clotting function and overall health. The Visit Fee add-on can help cover the exam fees tied to those check-ins, so the ongoing cost of staying on top of things doesn’t sneak up on you.

Getting a policy in place while your dog is symptom-free is the clearest path to making sure you’re covered. If signs appear before your policy is active, the condition will typically be considered pre-existing and won’t be eligible for coverage.

Before we go

A von Willebrand disease diagnosis might sound overwhelming at first, but with the right management and support from your vet, your dog can continue to thrive. Early diagnosis, proper care, and having insurance in place mean you can focus on keeping your furry friend safe and happy, no matter what.

Frequently Asked Questions

A few quick words, because we <3 our lawyers: This post is general in nature, and any statement in it doesn’t alter the terms, conditions, exclusions, or limitations of the policies issued, which differ according to your state of residence. You’re encouraged to discuss your specific circumstances with your own professional advisors. The purpose of this post is merely to provide you with info and insights you can use to make such discussions more productive! Naturally, all comments by, or references to, third parties represent their own views, and Lemonade assumes no responsibility for them. Coverage may not be available in all states. Please note that statements about coverages, policy management, claims processes, Giveback, and customer support apply to policies underwritten by Lemonade Insurance Company or Metromile Insurance Company, a Lemonade company, sold by Lemonade Insurance Agency, LLC.  The statements do not apply to policies underwritten by other carriers.