Epistaxis can be a symptom of:
A. Over-anticoagulation
B. Hematologic malignancy
C. Cocaine abuse
D. All of the above
ANS: D
Cocaine abuse, which is more common than might be expected, frequently causes epistaxis. Hematologic disorders likely to cause bleeding include thrombocytopenia, leukemia, aplastic anemia, and hereditary coagulopathies. High doses of anticoagulants can cause epistaxis and bleeding from the gums.
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