Internal bleeding occurs when blood leaks from blood vessels into the body’s cavities or tissues. This can happen due to trauma, such as a car accident, or medical conditions like ulcers or aneurysms. Symptoms may include pain, swelling, or bruising in the affected area, and it can be life-threatening if not treated promptly. Diagnosis often involves imaging tests like CT scans or ultrasounds to locate the source of the bleeding. Treatment may require surgery or other medical interventions to stop the bleeding and restore blood volume. Early detection is crucial for a better outcome.