Von Willebrand's Disease Type 1: The Genetically Testable, Usually Milder Form

Von Willebrand's disease is classified into types based on how the underlying protein deficiency actually presents — Type 1 involves a partial deficiency of von Willebrand factor, where the protein is present but at reduced levels, generally producing a milder bleeding tendency than the more severe types, which involve the protein being either structurally abnormal or almost entirely absent. Type 1 is also the most commonly documented form across the breeds where this condition has been studied, and it has the advantage of being confirmable through a specific, mapped genetic mutation test rather than relying solely on a functional blood level test that can have more day-to-day variability.

This distinction matters practically because a Type 1 diagnosis, while still a genuine bleeding risk requiring surgical precautions, generally carries a different — often somewhat less severe — risk profile than the less common, more severe forms. Knowing the specific type through genetic testing gives both the owner and the surgical team a clearer picture of what to actually expect and plan for, rather than treating every von Willebrand's diagnosis as functionally identical.

This specific genetic test turns an otherwise invisible risk into a documented, plannable one, well before it would ever be discovered the hard way during surgery.

If you think your Pug has von willebrand's disease, the plan is three steps: write down what you have seen and when it started, book a veterinary appointment rather than waiting for the next flare, and take video of the behaviour or symptom before you go — the thing you are worried about rarely happens in the consulting room. Screening in the parents covers brachycephalic airway syndrome (boas), pug dog encephalitis, corneal ulcers.

What the vet visit should produce is a diagnosis and a written plan, not just reassurance: what is being ruled out, what the monitoring interval is, and which signs mean you come back sooner. Ask what the treatment costs across a year rather than per visit, because that is the number that decides whether you are managing this condition or reacting to it.

Between appointments, keep a short log — dates, what you saw, what changed. It is the single most useful thing an owner brings to a follow-up, and for von willebrand's disease it is often what separates a clear pattern from a guess.