Perianal fistula and perianal abscess are two conditions that involve the area around the anus, but they are not the same. A perianal fistula is an abnormal connection between the surface of the skin near the anus and another structure, such as the rectum or bladder. A perianal abscess is a localized infection in the area around the anus that typically causes an area of redness, swelling, and pain.
Symptoms
Perianal fistula symptoms usually include pain, discharge, itching, and bleeding. The discharge may be pus, mucus, or blood. In some cases, the fistula may cause a flow of fecal matter from the anus.
Perianal abscess symptoms include redness and swelling around the anus, as well as pain. The pain may be worse when sitting or when having a bowel movement.
Causes
Perianal fistulas are usually caused by an infection of the anal glands. The infection can spread to the surrounding tissues, forming an abnormal connection between two structures.
Perianal abscesses are usually caused by a bacterial infection in the anal glands. The infection can spread to the surrounding tissues, causing an abscess to form.
Treatment
Perianal fistula treatment is typically surgical. The goal is to remove the fistula and repair any damage to the surrounding tissues.
Perianal abscess treatment typically involves draining the abscess and possibly prescribing antibiotics. Surgery may be required to remove the abscess if it does not respond to other treatments.