There are many reasons for anal itching, not necessarily suffering from hemorrhoids, its causes are commonly the following, first, if the patient has hemorrhoids, long-term constipation increased abdominal pressure, will lead to repeated prolapse of the hemorrhoid nucleus out of the anus, sometimes secreting mucus, fecal overflow perianal skin thus leading to itching, so suffering from hemorrhoids if not treated in a timely manner, sometimes leading to anal itching. Second, there are other reasons for anal itching, such as the anal sphincter is relatively loose, feces easily stains the skin around the anus, local stimulation can also cause itching. Third, if the diet some drugs, such as quinidine, colchicine will lead to acute anal itching, sometimes wearing artificial fibers or eating seafood can also lead to anal itching, so anal itching for many reasons, not necessarily have hemorrhoids.