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Symptoms and Signs – Differential Diagnosis of Upper and Lower Gastrointestinal bleeding,
Anal: haemorrhoids, fissure
Angiodysplasia
Bleeding disorders (thrombocytopenia, haemophilia), hereditary haemorrhagic telangiectasia, Dieulafoy gastric vascular abnormality, aortoduodenal fistulae, angiodysplasia, leiomyoma, Meckel's diverticulum, pseudoxanthoma
Bowel cancer, polyps
Colitis: inflammatory (ulcerative colitis), infective, ischaemic, radiation
Diverticulae (colonic)
elasticum
Excessive upper GI bleeding
Gastritis/gastric erosions, duodenitis, oesophagitis
Gastro-oesophageal varices
Mallory-Weiss tear
Medications: NSAIDs, anticoagulants, steroids, thrombolytics
Oesophageal/gastric cancer
Other: bleeding disorders, aortoenteric fistula, Meckel's diverticulum, solitary
Peptic ulcer (gastridduodenal)
rectal ulcer
Upper GI bleeding (haematemesis)



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