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Von Willebrand disease

Von Willebrand disease (VWD) is the most common inherited bleeding disorder. It is caused by too little von Willebrand factor (VWF) or VWF that does not work normally, which impairs platelet adhesion and can also lower factor VIII, leading to prolonged mucosal, menstrual or procedure-related bleeding.

At a glance

Quick facts

Condition snapshot
Protein affected
Von Willebrand factor (VWF)
Inheritance
Usually inherited; pattern varies by type
Main types
1 · 2 · 3
Typical bleeding
Nose · bruising · heavy periods · procedures
Diagnosis
VWF antigen + activity + factor VIII
Treatment
Desmopressin · VWF concentrate · antifibrinolytics

Names & terminology

How this entity may be named or searched

Von Willebrand disease
Preferred spelling; VWD is the standard abbreviation.
Type 1
Partial quantitative VWF deficiency and the most common form.
Type 2
Qualitative VWF dysfunction with several subtypes.
Type 3
Rare, severe quantitative deficiency with very low VWF and often very low factor VIII.

Structured entity profile

Clinical profile

Condition data
Hemostasis roleVWF helps platelets adhere and carries factor VIIIDeficiency can impair both primary and secondary clot formation.
Typical bleedingMucosal and procedure-relatedNosebleeds, easy bruising, heavy menstrual bleeding and dental/surgical bleeding are common patterns.
DiagnosisHistory + specific coagulation testsRoutine PT/aPTT can be normal and do not exclude VWD.
Core testsVWF antigen, VWF activity, factor VIIIAdditional subtype testing may be required.
Biologic variabilityVWF level changes with stress, pregnancy and illnessRepeat testing may be needed before diagnosis is secure.
TreatmentType- and situation-specificDesmopressin, VWF replacement and antifibrinolytic therapy are major options.

Overview

VWF is a large circulating protein that helps platelets attach to damaged blood vessels and stabilizes clotting factor VIII. In VWD, the amount or function of VWF is abnormal. Bleeding is therefore often most obvious from mucosal surfaces—nose, mouth, uterus—or after trauma, dental work, surgery or childbirth. [1] [2]

The phenotype is highly variable. Many people with type 1 have mild bleeding and are diagnosed only after a procedure or evaluation of heavy periods, while type 3 can cause severe bleeding and joint/muscle bleeding because factor VIII levels are also very low. Type 2 includes qualitative subtypes that respond differently to desmopressin, so accurate classification matters. [1] [3]

Symptoms and warning signs

Possible symptoms include recurrent prolonged nosebleeds, easy bruising, bleeding from gums, heavy or prolonged menstruation, postpartum bleeding and excessive bleeding after tooth extraction, surgery or injury. Family history can be helpful but may be absent because mild disease goes unrecognized, new variants can occur and relatives can have different bleeding severity. [1] [2]

SYMPTOM MATRIX

Mucosal and procedure-related bleeding is the classic pattern

Bleeding severity may change with age, hormones, pregnancy and hemostatic challenges.

Inherited bleeding disorder
Typical bleeding
  • Frequent/prolonged nosebleeds
  • Easy bruising
  • Heavy menstrual bleeding
  • Bleeding after dental work
  • Longer bleeding after cuts or surgery
More severe / context-specific
  • Postpartum hemorrhage
  • Gastrointestinal bleeding
  • Anemia from chronic blood loss
  • Joint or muscle bleeding in severe type 3
  • Family history of abnormal bleeding
Urgent bleeding
  • Bleeding that will not stop
  • Large-volume gastrointestinal bleeding
  • Head injury with severe headache/neurologic symptoms
  • Major postpartum bleeding
  • Severe bleeding after surgery or trauma

Known VWD should be communicated immediately during emergency or procedural care.

Diagnosis

Diagnosis combines a structured personal/family bleeding history with specific blood tests. Core tests include VWF antigen, a VWF activity assay and factor VIII activity. Screening coagulation tests can be normal in VWD and are not enough to exclude it. Additional tests—such as VWF multimer analysis, collagen-binding assays or platelet-binding studies—help classify type 2 disease. [1] [2]

VWF is an acute-phase protein: levels can rise with stress, exercise, pregnancy, inflammation and estrogen exposure. Blood group and age also influence levels. CDC notes that repeat testing may be needed before an accurate diagnosis is established, particularly when results are borderline or do not fit the bleeding history. [1]

Diagnostic pathway

Start with bleeding history, then use VWF-specific assays

Normal routine clotting tests do not rule out VWD.

Hemostasis testing
1Document bleeding phenotypeReview nose, menstrual, dental, surgical, postpartum and family bleeding.
2Order core VWD testsMeasure VWF antigen, VWF activity and factor VIII.
3Repeat when neededRe-test borderline or discordant results outside major stress/illness when clinically appropriate.
4Classify the typeUse specialized assays/genetics in selected patients to distinguish type 1, type 2 subtypes and type 3.
QuantityVWF antigenhow much VWF
FunctionVWF activityhow well VWF works
Associated factorFactor VIIIoften reduced

Diagnosis should be made with a bleeding-disorders clinician or laboratory familiar with VWF assay limitations when results are complex.

Types 1, 2 and 3

Type 1 is a partial deficiency and accounts for most cases. Type 2 includes several qualitative defects; some subtypes have abnormal platelet binding or loss of large multimers. Type 3 is rare and severe, with near-absent VWF and low factor VIII. Type determines whether desmopressin is likely to work and which treatments are safe. [2] [3]

Heavy menstrual bleeding, pregnancy and childbirth

Heavy menstrual bleeding is a common way VWD presents and can cause iron-deficiency anemia. VWF and factor VIII usually rise during pregnancy, sometimes improving laboratory levels, but they fall after delivery, creating postpartum bleeding risk. Delivery planning should therefore include late-pregnancy factor assessment and a postpartum hemostasis plan. [1] [2]

Treatment and management

Desmopressin (DDAVP) stimulates release of stored VWF and factor VIII and is useful for many patients with type 1 and selected other forms, but not all VWD responds and some type 2 subtypes can worsen with it. A supervised response trial may be used before relying on desmopressin for a major procedure. [2] [3]

VWF-containing factor concentrate is used when desmopressin is ineffective, contraindicated or insufficient and for more severe disease. Antifibrinolytic medicines such as tranexamic acid are particularly useful for mouth, dental and menstrual bleeding. Hormonal therapies can reduce heavy menstrual bleeding. Major surgery, childbirth and significant bleeding require an individualized hemostatic plan. [1] [2] [3]

Treatment & care hub

Match hemostatic treatment to VWD type and bleeding challenge

Minor mucosal bleeding, childbirth and major surgery need different plans.

Bleeding-disorder care
DesmopressinSelected patients

Release stored VWF

Often useful in responsive type 1 disease; response and safety should be established before major reliance.

VWF concentrateReplacement

Replace missing/abnormal factor

Used for severe disease, major procedures or when desmopressin is unsuitable.

AntifibrinolyticMucosal bleeding

Stabilize formed clots

Tranexamic acid is useful for dental, oral and menstrual bleeding in appropriate patients.

PlanningEssential

Prepare before surgery and birth

Procedural and obstetric plans should specify target levels, treatment and post-procedure monitoring.

Classify VWD→Know response→Plan challenge→Monitor bleeding

Desmopressin can cause hyponatremia and is not appropriate for every VWD subtype or patient.

Dental work and surgery

Patients should tell dentists and surgeons about VWD before procedures. Minor dental work may be managed with local measures and antifibrinolytic therapy, while more invasive procedures can require desmopressin or VWF concentrate and factor monitoring. Aspirin and some NSAIDs can worsen platelet-related bleeding and should be discussed with the treating clinician. [2] [3]

Iron deficiency and chronic blood loss

Repeated menstrual or mucosal bleeding can deplete iron before anemia becomes severe. Ferritin and blood count assessment can identify iron deficiency, and iron replacement should accompany control of the bleeding source. Fatigue should not automatically be attributed to VWD without checking for anemia and other causes. [1] [2]

Bleeding disorder context

Von Willebrand disease is the most common inherited bleeding disorder

Clinical recognition can be delayed because mild mucosal bleeding is often normalized.

CDC — About von Willebrand Disease ↗
Inherited bleeding disordermost commonCDC
Main proteinVWF
Main types1 · 2 · 3
Interpretation: Laboratory prevalence estimates exceed diagnosed symptomatic disease; this panel avoids presenting one figure as if all cases have the same clinical severity.

Common questions

Frequently asked questions

Reference content

Sources

  1. CDC — About von Willebrand Disease
  2. CDC — Diagnosing von Willebrand Disease
  3. ASH / ISTH / NHF / WFH — 2021 Guidelines on the Management of von Willebrand Disease
  4. NHLBI — The Diagnosis, Evaluation and Management of von Willebrand Disease

This article is based on trusted medical sources and is awaiting clinician review. It is not a substitute for personalized medical advice.