If you have redness and bleeding in the anus, you should be suffering from prolapsed internal hemorrhoids, which themselves should be located in the anus above the dentate line of the anal canal. However, as the nucleus of the internal hemorrhoid grows, it gradually separates from the muscular layer of the anal canal, and then thickens and prolapses outside the anus. The prolapsed internal hemorrhoid is blocked by the venous reflux, which causes stagnation of the built-in venous mass, and over time causes tortuousness and dilatation of the built-in venous mass, and even increases the permeability of the blood vessel wall, resulting in inflammation and thus redness. In addition, because the walls of the veins in the hemorrhoid nucleus are thin, after a long period of bruising, they will break down and bleed after breaking down.