If you have rectocolitis with bloody stools or mucus and blood, consider the need for further e-colonoscopy, which generally reveals scattered localised mucosal congestion and ulcerative changes in acute and chronic colitis or ulcerative colitis. Haemorrhoids, on the other hand, are simple bright red blood in the stool, accompanied by localised anal pain or prolapsed nuclei, with no obvious mucosal changes in the bowel.