A nosebleed occurs when the membranes lining the inner nose are disturbed or irritated enough to cause abnormal bleeding. The medical term for nosebleed is epistaxis. There are two types of nosebleeds: anterior and posterior. If the bleeding is near the front of the nose, it is an anterior nosebleed. A posterior nosebleed occurs in the back of the nose and is not always characterized by rapid bleeding but may be slow, steady ooze.
- A breakdown in the membranes lining the nose. This can be triggered by poorly humidified air or probing, bumping, picking, or rubbing your nose.
- Blowing the nose forcefully can also cause a nosebleed, especially if the nasal lining is already inflamed because of a virus, bacteria, or allergy.
- Injury to the face or nose.
- Scars and damage from previous nosebleeds that reopen and bleed.
- High blood pressure.
- Medicines that slow the time normally required for the blood to clot.
Symptoms of anterior nosebleed include intermittent or constant bleeding out of the front of the nose. Blood can flow from one or both nostrils and can flow into the throat.
Symptoms of posterior nosebleed include bleeding that stops and starts, rapid bleeding from the back of the nose, or a slow, steady ooze. Sometimes the blood flows back into the throat. Especially with posterior nose bleeding, one can lose blood quickly.
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