What causes nosebleeds in children while sleeping?

Causes. The most common causes of nighttime nose bleeds are dryness and nose picking, according to FamilyDoctor.org. Dry air, often exacerbated by indoor heat in the winter, dries out the nasal lining and may cause irritation. Nose picking also causes irritation and exposes blood vessels.Aug 16, 2013 read more

Nosebleed with a severe headache – this can be a sign of high blood pressure. This should be checked right away. Nosebleed with other unusual areas of bleeding or bruising such as bleeding gums, blood in the urine or stool, or severe bruising all over the body. read more