Diagnosis and Management of Internal Hemorrhoids

Clinical Presentation and Diagnosis

Bright red blood in the toilet indicates bleeding from internal hemorrhoids above the dentate line, which characteristically produces bright red blood that drips or squirts into the toilet bowl, according to the American Gastroenterological Association 1, 2
The American Gastroenterological Association recommends that a positive fecal occult blood test should not be attributed to hemorrhoids without complete colonic evaluation, to exclude proximal colonic pathology, particularly malignancy 1, 2

Anoscopy is essential to visualize internal hemorrhoids and confirm the diagnosis, as recommended by the American Gastroenterological Association and the European Gastroenterology Society 1, 3
Flexible sigmoidoscopy (minimum) should be performed for any rectal bleeding to exclude other pathology, according to the American Gastroenterological Association and the European Gastroenterology Society 1, 3
Complete colonoscopy is indicated if the patient has risk factors for colorectal cancer (age >50, family history, atypical bleeding pattern), as recommended by the American Gastroenterological Association and the European Gastroenterology Society 1, 3
The American Gastroenterological Association recommends checking hemoglobin/hematocrit to assess for anemia, though anemia from hemorrhoids alone is rare (0.5/100,000 population) 1, 2

If the patient has any history of liver disease or portal hypertension, the protruding vessel could represent anorectal varices rather than hemorrhoids, and standard hemorrhoidal treatments should NOT be used for variceal bleeding, according to the World Journal of Emergency Surgery and the American Gastroenterological Association 1, 4
Anorectal varices occur in up to 89% of patients with portal pressure >10 mmHg, and requires endoscopic ultrasound with color Doppler for diagnosis, as recommended by the World Journal of Emergency Surgery 4, 5