Related DDx ⬇
Etiology ⬆
- Malignancy
- Vascular ectasias (angiodysplasias), eg, idiopathic arteriovenous malformation (AVM), CREST syndrome, hereditary hemorrhagic telangiectasias
- Portal hypertensive gastropathy
- Peptic ulcer disease
- Ulcerated polyp
- Infections, eg, hookworm, tuberculosis (TB)
- Drugs, eg, NSAIDs, aspirin
- Inflammatory bowel disease
- Malabsorption, especially celiac sprue
- Menstrual or pregnancy-associated iron loss
- Idiopathic