What are common causes of nose bleeds in children?

Can't stop the bleed. The most common reason for nosebleeds in children is dryness in the nose. Dryness can be due to dry heat in the home or changes in weather. You may try putting a nasal saline gel inside the nose to keep the nose lubricated and moist. If the nose continues to bleed, you may need to see an ear, nose, throat doctor to cauterize the blood vessel which is bleeding and may be close to the surface.