When the blood pressure goes up, more blood is pumped through the veins, which will make the nose bleed more and the nosebleed harder to stop. Also if you lie back, blood will run down your throat. If the child swallows a lot of blood, they will vomit. Some children have veins that are closer to the mucous membrane of their nose than other children. Because the veins are very close to the skin, they are more likely to burst when the child picks, blows or rubs its nose, or plays rough games.
Some children pick their nose a lot so they too are more likely to get nosebleeds.
Cut the child's nails frequently. A little petroleum jelly applied on the inner side of the nose can also soften scabs. If the child often gets nosebleeds, it may be a good idea to have a doctor examine them. If the nosebleeds are caused by a vein that is very close to the skin, they can be prevented by cauterising the front of the nose. This is a simple procedure which can be carried out in the GP's surgery or hospital clinic.