Get the facts on nosebleeds, which are common in adults and children between the ages of 3 and 10. We’ll explain the two different kinds of nosebleeds, anterior nosebleeds and posterior. A nosebleed, also known medically as epistaxis, is bleeding from the nasal cavity caused by rupture of small blood vessels in the nasal mucosa. [1] Most cases are minor and stop spontaneously with simple first-aid or medical care. In some cases, blood may flow down into the stomach, and cause nausea and vomiting. [8] In more severe cases, blood may come out of both nostrils. [9] Rarely. The definition of a nosebleed is simply bleeding from the blood vessels in the nose. Learn the causes, warning signs, when to worry, and how to stop a bloody nose. Read about the causes of nosebleeds, how to treat them at home and when you should get medical advice. When does a nosebleed require medical attention? Know the signs of a serious issue and when to seek help. Epistaxis is the medical term for a nosebleed. Learn about the most common causes of nosebleeds and when to worry. (Hint: not very often.) Most nosebleeds are harmless and easy to stop, but some signal a deeper issue. Learn what causes them, how to handle one, and when to see a doctor. Though most nosebleeds are mild and benign, they shouldn’t happen. Experts weigh in on when to see a doctor Nosebleeds usually aren’t serious, but knowing how to stop the bleeding and treat your symptoms is important. Learn how to prevent and treat nosebleeds. Learn about possible causes of a nosebleed, self-care steps to take if you get one and when to seek medical care.