How do blood dyscrasias cause epistaxis (nosebleed)?

Updated: May 08, 2020
  • Author: Quoc A Nguyen, MD; Chief Editor: Arlen D Meyers, MD, MBA  more...
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Congenital coagulopathies should be suspected in individuals with a positive family history, easy bruising, or prolonged bleeding from minor trauma or surgery. Examples of congenital bleeding disorders include hemophilia and von Willebrand disease. [7]

Acquired coagulopathies can be primary (due to the diseases) or secondary (due to their treatments). Among the more common acquired coagulopathies are thrombocytopenia and liver disease with its consequential reduction in coagulation factors. Even in the absence of liver disease, alcoholism has also been associated with coagulopathy and epistaxis. Oral anticoagulants predispose to epistaxis.

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