Nosebleeds (Epistaxis)
Epidemiology
Epistaxis is so common that almost everyone has had a nosebleed on at least several occasions, usually as a result of trauma. It has peaks of incidence at age 2-10 and 50-80 years old. Both sexes are equally affected.
It is classified as anterior or posterior, depending upon the source of bleeding.
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Anterior Bleeding - The source of bleeding is visible in about 90% of cases - usually from the nasal septum, particularly Kiesselbach's plexus (also called Little's area), which is an anastomotic network of vessels on the anterior portion of the nasal septum.
- Posterior Bleeding - This emanates from deeper structures of the nose, and occurs more commonly in older individuals.

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