Von Willebrand Disease
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March 2024
This series presents individual medical cases that feature challenging conditions, uncommon diseases, or an unusual presentation of symptoms. Below, we summarize a case, explain our research and analysis, and suggest an underwriting recommendation. Munich Re’s team of global medical directors routinely conducts rigorous analyses of the latest medical advances so that primary insurers and society alike can benefit from evidence-informed risk assessments. It is our hope that exploring compelling cases will foster a greater understanding of medical research and awareness of new medical innovations and emerging risks while ultimately expanding insurability.
Case: Von Willebrand Disease
Munich Re medical's response
What exactly is Von Willebrand Disease (VWD)?
- An inherited bleeding disorder resulting from either decreased levels of Von Willebrand Factor in the blood or normal levels of Von Willebrand Factor that do not work properly. The end result is a difficulty forming and maintaining blood clots, resulting in prolonged bleeding. Symptoms can include easy bruising, gum and nose bleeding, and excessive bleeding during menses, delivery, and surgeries.
- There are three different types: Type 1 (mild - 85% of cases), Type 2 (moderate - 13-15% of cases, with subsets 2A, 2B, 2M, 2N), and Type 3 (severe - 2% of cases).
How common is this condition, and what are some mortality and morbidity concerns?
- VWD is the most common bleeding disorder, affecting 1% of the general population. It is nearly always inherited and equally split between men and women
- Mortality increases with disease severity. Mild disease poses minimal, if any, additional risk. As severity increases, injury and surgical complications increase, as does the risk of life-threatening complications such as intracranial bleeding and intra-abdominal bleeding
- Morbidity risk is life-threatening hemorrhage complicated by heart attack, stroke, or coma (for Type 3 VWD only).
- It is important to look at Von Willebrand Disease by both the diagnosed Type (1, 2, or 3), as well as the pattern and severity of symptoms.