The stinging sensation in the anus when you have a bowel movement may be caused by the following: 1. It may be due to the stinging sensation caused by the tearing of the anal skin during the forceful discharge of the stool, which is too hard and dry, accompanied by a small amount of bleeding. 2. 3. Consider the hemorrhoids, especially when the hemorrhoids are enlarged and congested, the squeezing of the stool will make the anus feel tingling. It may also be caused by anal polyps, perianal abscesses, etc. It is best to go to a hospital anorectal specialist for the appropriate examination, and then take the appropriate treatment measures for the cause.