Causes of sudden nosebleeds in adults include trauma to the nose, picking at the nose or irritation from a cold, according to WebMD. It is also possible to get a sudden nose bleed due to the development of a disease. Disease is a less common reason for sudden nose bleeds, but conditions such as blood clotting diseases may contribute to bleeding from the nose, explains WebMD. Medications such as warfarin or aspirin may also cause blood to be thinner and not clot as it should.
Medically reviewed by Drugs. Last updated on May 2, Nosebleeds, also called epistaxes ep-ih-STAK-seez , involve bleeding from the inside of your nose. Many people have occasional nosebleeds, particularly younger children and older adults. Although nosebleeds may be scary, they're generally only a minor annoyance and aren't dangerous.
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Nosebleeds can be frightening, but they aren't usually a sign of anything serious and can often be treated at home. It can be heavy or light and last from a few seconds to 15 minutes or more. If the bleeding eventually stops, you won't usually need to seek medical advice. However, in some cases you may need further treatment from your GP or in hospital see below. Occasionally, bleeding can come from the blood vessels deeper within the nose.
Doctors hear this question a lot, especially from parents. They may report that their children sometimes bump their noses or fall down and get nosebleeds. While this can be distressing, at least these parents know the cause. More concerning are nosebleeds that seem to happen without a cause. Sometimes children will wake up in the morning with blood on their pillows or dried blood around their nose or face.