Abstract
GI bleeding is a symptom of digestive tracts disorder. This review explains the definition and etiologies of these condition along with the diagnosis methods of GI bleeding. We conducted search using electronic biomedical databases such as; Medline, and Embase, for studies published up to end of 2018 with English language concerning the thrombocytopenia in general, Following MeSh terms were used in our search strategy: "lower gastrointestinal bleeding", "GI bleeding", "differential diagnosis". Gastrointestinal (GI) bleeding is a term made use of for any kind of blood loss that happens within the GI system from mouth to anus. GI blood loss can be classified into upper and lower in origin. The ligament of Treitz is commonly used as the point to differentiate both. Bleeds proximal to the ligament are upper GI bleeds, and distal bleeds are lower GI hemorrhages. Classification right into one of the two groups is very important as it routes the assessment and management of the patient. GI bleeding can be brought on by a wide range of pathologies and they differ in beginning, area, risk and medical discussion. In patients with energetic GI blood loss that are unsteady, acute resuscitation should come before any examinations. Accurate clinical diagnosis is crucial in identifying the examination of option and particular therapy interventions. The correct analysis algorithm relies on a good understanding of the type of GI blood loss, risk examination and clinical presentation which might indicate the nature and source of blood loss.