Nosebleeds, also known as epistaxis, is a common problem that affects people of all ages. A nosebleed is defined as bleeding from the nostrils or the blood vessels in the nose. The nosebleeds can be spontaneous or may be caused by a traumatic event, such as a blow to the face. In most cases, nosebleeds are not serious and can be easily treated. However, in rare cases, they can be a sign of a more serious underlying condition.