Epistaxis (plural: epistaxes) is the medical term for a nosebleed, and is very common in clinical practice with a broad differential diagnosis. Anterior epistaxes mainly bleed from Kiesselbach's plexus and posterior epistaxes (5% of all epistaxis) from Woodruff's plexus.
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Epidemiology
Epistaxis is very common, with a lifetime incidence of ~60% 2.
Pathology
Etiology
There is a broad range of causes, both local and systemic 2:
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local
digital trauma (most common)
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neoplasms (rare)
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vascular malformations (rare)
hereditary hemorrhagic telangiectasia (Osler-Weber-Rendu syndrome)
intracranial aneurysms (very rare)
chemical irritants
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systemic
coagulopathy, congenital (e.g. von Willebrand disease) and acquired (e.g. alcohol use)
renal failure
Radiographic features
They usually do not require imaging, unless they are very severe or recurrent. In rare instances, these can be evaluated in the interventional radiology suite for potential endovascular embolization, especially if uncontrollable with nasal packing. Ideally, prior to embolization, these cases should be imaged by head and neck CTA.
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