- a child under 2 years old has had a nosebleed
- you have regular nosebleeds
- you have symptoms of anaemia - such as a faster heartbeat (palpitations), shortness of breath and skin that is paler than normal for you
- you have a nosebleed and you're taking a medicine that helps prevent blood clots, such as warfarin
- you have a nosebleed and you have a condition that means your blood cannot clot properly, such as haemophilia
The GP might want to test you for haemophilia or for other conditions like anaemia.
You have a nosebleed and:
- your nosebleed lasts longer than 10 to 15 minutes
- the bleeding seems excessive
- you're swallowing a large amount of blood that makes you vomit
- the bleeding started after a blow to your head
- you're feeling weak or dizzy
- you're having difficulty breathing
The inside of the nose is easy to damage and that's when nosebleeds happen. This can be caused by:
Nosebleeds that need medical attention can come from deeper inside the nose and usually affect adults. They can be caused by:
Sometimes the cause of a nosebleed is unknown.
Holding an icepack (or a bag of frozen peas wrapped in a tea towel) on the top of the nose may help reduce the blood flow. But the evidence to show it works is not very strong.