Gastrointestinal bleeding is a dangerous condition that can be life-threatening if not detected and treated promptly. Gastrointestinal bleeding is divided into upper gastrointestinal bleeding and lower gastrointestinal bleeding, of which the upper gastrointestinal bleeding is more common.

Upper gastrointestinal bleeding is defined as bleeding originating in the esophagus, stomach, and duodenum. Upper gastrointestinal bleeding is a common medical emergency and can be life-threatening.

Gastrointestinal bleeding is bleeding out of the gastrointestinal tract and into the gastrointestinal tract. This is a dangerous medical emergency, if not diagnosed and treated promptly, it can affect the patient's life.