Bleeding from the nose may be the result of a blow to the nose, or because the nose has been blown too hard, causing the blood vessels to break, or the result of drying and cracking of the nose in hot, dry weather, or it may occur (especially in children) for no apparent reason at all. In elderly people, a nosebleed may be a side effect of high blood pressure.
Sit the victim down with the head leaning forward so that the blood does not flow into the throat. Loosen any clothing around the neck. The victim should then pinch the lower soft part of the nose between the finger and thumb for about 10 minutes, and then release the pressure slowly. This can be repeated if the bleeding continues. When the bleeding stops, the victim should be careful not to blow the nose, as this will dislodge the clot and start the bleeding again. If the bleeding does not stop or if you suspect a broken nose or other injury, the nose should be held while medical help is obtained.