Symptoms of an anal fistula can include:   An opening on the skin around the anus A red, inflamed area around the tunnel opening Oozing of pus, blood or stool from the tunnel opening Pain in the rectum and anus, especially when sitting or passing stool Fever 
symptoms anal fistula can include:   opening skin anus red  inflamed area tunnel opening oozing pus  blood stool tunnel opening pain rectum anus  especially sitting passing stool fever 
anal fistula