What are the symptoms of internal bleeding?

Symptoms of internal bleeding include headache, dizziness, nausea, and vomiting. When there is significant bleeding, symptoms may include hematemesis (vomiting blood). If the bleeding is slow, blood may pass into the intestines and result in black, tarry stools (melena). Bleeding from the small intestine, colon, or biliary tract can also lead to the passage of dark red or black stools through the anus. It is necessary to go to the hospital for ultrasound, CT, and other examinations to determine the cause and volume of bleeding, followed by appropriate treatment. Hemostasis is generally achieved using medications, surgery, or other methods, with the specific approach chosen according to the site of bleeding.