Nosebleeds, also referred to as epistaxis are quite common, especially in the young. A nosebleed is loss of blood from the tissue lining the nose, primarily from one nostril only. http://www.ndhealthfacts.org/wiki/Nosebleed http://www.nlm.nih.gov/medlineplus/ency/article/003106.htm http://www.nhs.uk/Conditions/Nosebleed/Pages/Introduction.aspx http://www.mayoclinic.org/first-aid/first-aid-nosebleeds/basics/art-20056683 http://www.webmd.com/first-aid/nosebleeds-causes-and-treatments