Group of hemorrhagic disorders in which the VON WILLEBRAND FACTOR is either quantitatively or qualitatively abnormal. They are usually inherited as an autosomal dominant trait though rare kindreds are autosomal recessive. Symptoms vary depending on severity and disease type but may include prolonged bleeding time, deficiency of factor VIII, and impaired platelet adhesion.

Synonyms: von Willebrand Disease, Angiohemophilia, von Willebrand Diseases, Disorder, Von Willebrand, Angiohemophilias, von Willebrand Disease, Recessive Form, Hemophilia, Vascular, Vascular Pseudohemophilia, von Willebrand's Diseases, Vascular Hemophilias, von Willebrand's Disease, Pseudohemophilias, Vascular, Pseudohemophilia, Vascular, Von Willebrand Disorder, Von Willebrand's Factor Deficiency, Vascular Pseudohemophilias, Vascular Hemophilia