What is it?

Nosebleeds, or epistaxis, is bleeding from the tissue inside the nose and are common. Most nosebleeds are not serious. An anterior nosebleed comes from the septum and is the most common type, resulting from bleeding in the capillaries and small blood vessels in the front of the nose. If the bleeding is from the back of the nose, it is caused due to bleeding from large vessels, which could result in heavy bleeding, and may require medical treatment. Risk factors include dry air, colds, allergies, septal deviation, trauma, high blood pressure, atherosclerosis, bleeding disorders, pregnancy, and taking blood thinners.