Diseases that cause anal pain and itching include perianal abscess, anal fissure, polyps, hemorrhoids, etc. It is recommended to go to the hospital to find out the cause of the disease and actively treat it. 1. Perianal abscess: mainly due to purulent infectious diseases around the anal canal and rectal tissues, the pus stimulates the skin around the anus and causes pain, itching, accompanied by swelling, fever, pus and so on. 2. Anal fissure: mainly due to the anal area of the skin rupture and cause pain, feces and intestinal secretions to stimulate the wound or wound in the healing process may appear itching. 3. Anal polyps: if polyps appear inflammation and infection or invasion of nerves will be manifested as anal pain and itching, accompanied by blood in the stool, foreign body sensation in the anus and so on. 4. Hemorrhoids: bleeding hemorrhoids, embedded or co-infection, will cause anal swelling, pain, itching and other symptoms. Anal pain and itching, in addition to the above diseases, there may be other causes, it is recommended that you should go to the hospital in time to check, clear the cause of the disease, under the guidance of a professional doctor reasonable and standardized treatment, to avoid delaying the condition.