Find out what to do in case of hemorrhage, or bleeding. Discover how to recognize a medical emergency, the complications, and more. Internal bleeding happens when your blood vessels break and blood collects inside your body. There are several causes of internal bleeding that range in severity. Bleeding is the loss of blood from the circulatory system. Causes can range from small cuts and abrasions to deep cuts and amputations. Injuries to the body can also result in internal bleeding, which can range from minor (seen as superficial bruising) to massive bleeds. Bleeding can be caused by injuries, or it can be spontaneous. Spontaneous bleeding most commonly occurs with problems in the joints, or gastrointestinal or urogenital tracts, often in people who have a bleeding disorder or who take a blood thinning medicine. Bleeding is the loss of blood, inside or outside the body. A hemorrhage is severe bleeding. Learn about the causes of bleeding and how to treat it. Bleeding, hemorrhage, haemorrhage or blood loss, is blood escaping from the circulatory system from damaged blood vessels. Bleeding can occur internally, or externally either through a natural opening such as the mouth, nose, ear, urethra, genitalia or anus, or through a puncture in the skin. Bleeding and blood clotting, escape of blood from blood vessels into surrounding tissue and the process of coagulation through the action of platelets. The evolution of high-pressure blood circulation in vertebrates has brought with it the risk of bleeding after injury to tissues. Signs and symptoms of internal bleeding may vary based on location, presence of injury or trauma, and severity of bleeding. Common symptoms of blood loss may include: This article will discuss the different types of bleeding in more detail, including internal and external bleeding, and provide tips for first aid. Types of hemorrhages range from minor (like a bruise) to major (like bleeding in your brain). If you can’t stop external bleeding or suspect internal bleeding, get immediate medical help.