An abscess at the anal opening may be a sign of a perianal abscess. Perianal abscess is due to bacterial infection of the anal sinus inside the anus, which leads to an inflammatory reaction of the skin around the anus. It usually manifests itself as a mass at the anal opening, with a more pronounced sense of pressure and pain, and a distinct sense of fluctuation that can be felt during the pus-forming stage, and in some cases, with chills and fever. Patients with perianal abscess are recommended to go to the hospital for surgery in time. The effect of treatment by conservative methods is not particularly satisfactory, and in many cases, the condition will be delayed, for example, the scope of the abscess may expand, the difficulty of surgery will increase accordingly, and the recovery time after surgery will be prolonged. Therefore, if you have a perianal abscess, you should go to the hospital as soon as possible for surgical treatment.