What is the reason for vomiting blood?
Vomiting blood (hematemesis) can indicate a life-threatening condition, so promptly identifying the cause is essential. While vomiting blood may be caused by swallowed blood, as from a nosebleed or forceful coughing, truly vomiting blood usually represents something more serious and requires immediate medical attention. Bleeding in your upper gastrointestinal tract (mouth, esophagus, stomach and upper small intestine) from peptic ulcers or torn blood vessels is a common cause of vomiting blood. Blood in vomit may be bright red, or it may appear black or dark brown like coffee grounds. Call 911 if vomiting blood causes dizziness after standing, rapid, shallow breathing or other signs of shock.
