A child with a chronic disease that causes forceful coughing, such as cystic fibrosis, may have frequent nosebleeds. And parents of those with inborn disorders affecting the blood's ability to form clots, such as hemophilia or von Willebrand disease, should be watchful about harmful habits such as nose-picking. You believe your child has lost a lot of blood. Your child is bleeding from the mouth, or vomiting blood or brown material that looks like coffee grounds. Your child's nose is bleeding after a blow or injury to any part of the head.
Possible cause is Swelling and irritation of nasal tissue.
Action to take To stop bleeding, apply a cold compress to the soft part of the nose. Use of a cold air humidifier in your child's bedroom at night may help relieve stuffiness and keep the membranes moist. Do not add medications or aromatic preparations to the humidifier. If your child has not been evaluated for allergies, consult your pediatrician. Possible cause is Drying of nasal mucous membranes.