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Von Willebrand disease

Bleeding disorder - von Willebrand

Von Willebrand disease is the most common hereditary bleeding disorder.

Causes

Von Willebrand disease is caused by a deficiency or poor functioning of von Willebrand factor. Von Willebrand factor helps blood platelets clump together and stick to the blood vessel wall, which is necessary for normal blood clotting. There are several types of von Willebrand disease.

A family history of a bleeding disorder is the primary risk factor.

Symptoms

Symptoms may include:

Note: Most women with heavy or prolonged menstrual bleeding do not have von Willebrand disease.

Exams and Tests

Von Willebrand disease may be hard to diagnose. Low von Willebrand factor levels and bleeding do not always mean you have von Willebrand disease.

Tests that may be done to diagnose this disease include:

Treatment

Treatment may include desmopressin (desamino-8-arginine vasopressin or DDAVP). It is a medicine to raise von Willebrand factor level and reduce the chances for bleeding.

However, DDAVP does not work for all types of von Willebrand disease. Tests should be done to determine what type of von Willebrand you have. If you are going to have surgery, your doctor may give you DDAVP before surgery to see if your von Willebrand factor levels increase.

The medicine Alphanate (antihemophilic factor) is approved to decrease bleeding in people with the disease who must have surgery or any other invasive procedure.

Blood plasma or certain factor VIII preparations may also be used to decrease bleeding.

Outlook (Prognosis)

Bleeding may decrease during pregnancy. Women who have this condition usually do not have excessive bleeding during childbirth.

This disease is passed down through families. Genetic counseling may help prospective parents understand the risk for their children.

Possible Complications

Bleeding may occur after surgery or when you have a tooth pulled.

Aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) can make this condition worse. Do not take these medicines without first talking to your health care provider.

When to Contact a Medical Professional

Contact your provider if bleeding occurs without reason.

If you have von Willebrand disease and are scheduled for surgery or are in an accident, be sure you or your family tell the providers about your condition.

Open References

References

Branchford BR, Flood VH. Von Willebrand disease. In: Kliegman RM, St. Geme JW, Blum NJ, et al, eds. Nelson Textbook of Pediatrics. 22nd ed. Philadelphia, PA: Elsevier; 2025:chap 526.

James P, Rawley O, Bowman M. Structure, biology, and genetics of von Willebrand factor. In: Hoffman R, Benz EJ, Silberstein LE, et al, eds. Hematology: Basic Principles and Practice. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 133.

Paola JD, O'Donnell JS. Von Willebrand disease and hemorrhagic abnormalities of platelet and vascular function. In: Goldman L, Cooney KA, eds. Goldman-Cecil Medicine. 27th ed. Philadelphia, PA: Elsevier; 2024:chap 159.

Samuels P. Hematologic complications of pregnancy. In: Landon MB, Galan HL, Jauniaux ERM et al, eds. Gabbe's Obstetrics: Normal and Problem Pregnancies. 8th ed. Philadelphia, PA: Elsevier; 2021:chap 49.

  • Blood clot formation

    Blood clot formation - illustration

    Blood clotting normally occurs when there is damage to a blood vessel. Platelets immediately begin to adhere to the cut edges of the vessel and release chemicals to attract even more platelets. A platelet plug is formed, and the external bleeding stops. Next, small molecules, called clotting factors, cause strands of blood-borne materials, called fibrin, to stick together and seal the inside of the wound. Eventually, the cut blood vessel heals and the blood clot dissolves after a few days.

    Blood clot formation

    illustration

  • Blood clots

    Blood clots - illustration

    Blood clots (fibrin clots) are the clumps that result when blood coagulates.

    Blood clots

    illustration

  • Blood clot formation

    Blood clot formation - illustration

    Blood clotting normally occurs when there is damage to a blood vessel. Platelets immediately begin to adhere to the cut edges of the vessel and release chemicals to attract even more platelets. A platelet plug is formed, and the external bleeding stops. Next, small molecules, called clotting factors, cause strands of blood-borne materials, called fibrin, to stick together and seal the inside of the wound. Eventually, the cut blood vessel heals and the blood clot dissolves after a few days.

    Blood clot formation

    illustration

  • Blood clots

    Blood clots - illustration

    Blood clots (fibrin clots) are the clumps that result when blood coagulates.

    Blood clots

    illustration

 

Review Date: 3/31/2024

Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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