Gastrointestinal <unk>  is defined as<unk>  from any part of GI tract starting from mouth to anus. It can also be called as gastrointestinal hemorrhage. Based on the origin of<unk>  it can be classified into upper<unk>  and lower<unk> . Upper<unk>  (UGIB) is defined as<unk>  from the gastrointestinal tract that originates proximal to the ligament of Treitz. Lower<unk>  is defined as blood loss originating distal to the ligament of Treitz. The most common causes of UGIB are peptic ulcer disease and esophageal varice while diverticulosis is the most commonly responsible for lower<unk> . Clinical presentation includes overt<unk>  from the gastrointestinal tract, rapid or slow, either manifested by hematemesis of fresh (blood-streaked to frankly bloody), old ('coffee ground') vomitus, melena and or as frank blood per rectum.
Common risk factors in the development of<unk>  include advancing age, previous history of gastrointestinal bleed, chronic constipation, hematologic disorders, anticoagulants medications, non-steroidal anti-inflammatory drugs.  It is essential to distinguish between lower<unk>  and brisk upper<unk>  as they can present with similar symptoms. Patients with severe<unk>  or hemodynamic disturbance require hospitalization and urgent investigation. Treatment depends on the cause and the severity of the<unk> .
Gastrointestinal bleeding
Internal bleeding
Lower gastrointestinal bleeding
Mucosal bleeding
Upper gastrointestinal bleeding
Burns
Gastrointestinal varices
Skin nodules