First, anal warts, usually located in the skin around the anus, or its folds, the size of the needle tip to rice grains, grayish white, the surface of the papillary or granular, with a tip or base wide, single or multiple. Usually have a history of unclean sex, no special discomfort. Second, hemorrhoids, is the perianal skin or mucous membranes under the blood vessels dilated due to the general volume is relatively large, about the size of soybean to peanut size ranging, located in the edge of the anus, the surface of the skin is normal, can be accompanied by pain or defecation of blood dripping from the anus.