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Nosebleed (Epistaxis)
What Is It?
The inside of the nose is covered with moist, delicate tissue (mucosa) that has a rich supply of blood vessels near the surface. When this tissue is injured, even from a minor nick or scratch, these blood vessels tend to bleed, sometimes heavily. Nosebleeds near the front of the nose, called anterior nosebleeds, are very common since this is the most accessible area to injury. The most frequent location is the nasal septum, the wall between the two sides of the nose. In most cases, this type of nosebleed is not serious. It usually can be stopped with some local pressure and a little patience.
Only rarely is a nosebleed life threatening or fatal. In these cases, the hemorrhage (severe bleeding) is usually from an artery in a posterior location, higher and deeper in the nose. Posterior bleeds usually drain down the back of the throat, but can also bleed out of both nostrils. Also, in most cases of severe nosebleeds, the person has another health problem, such as high blood pressure or a bleeding disorder, or the person takes a blood-thinning medication that slows down the blood-clotting process.
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