What are common symptoms of an anal abscess/fistula?

Pain : Anal abscess or fistula typically cause pain near the rectum. The fistulae moreso during bowel movements. Both are important to diagnose and treat, especially an abscess as this can cause death or disability if not treated promptly.

Pain,: Swelling and drainage of purulent material/fluid, maybe fever. Proper drainage and possible surgical correction of the fistula is necessary.

Butt pain : A persistent 'pain in the butt' should be eval by a doctor or at least have your butt look at under the light of day.

Anal Abscess: An anal abscess is a painful condition in which a collection of pus develops near the anus. Most anal abscesses are a result of infection from small anal glands. http://www.webmd.com/a-to-z-guides/anal-abscess