GI bleeding Causes / Differential Diagnosis Mnemonic

ABCDEFGHI:

Angiodysplasia
Bowel cancer
Colitis
Diverticulitis/ Duodenal ulcer
Epitaxis/ Esophageal (cancer, esophagitis, varices) Fistula (anal, aortaenteric)
Gastric (cancer, ulcer, gastritis) Hemorrhoids
Infectious diarrhoea/ IBD/ Ischemic bowel