An anal fistula is an abnormal tube-like connection that forms between the inside of the anus at the anal gland and the skin right outside the anus. Think of it as a tunnel. The abscess that causes the fistula is quite painful. It can cause intense pain and swelling around the anus. This pain gets worse with bowel movements. You may also have a fever and bleeding around the area. An anal fistula usually begins with an infection in the anal gland.
Anal Fistula | Johns Hopkins Medicine
An anal fistula is an uncomfortable, messy, condition. If you're dealing with one or more fistulas, you'll surely want them to be gone. I've put together a basic guide to anal fistulas to help you understand this difficult condition and what options are available. Anal fistulas require surgery, but there are multiple approaches to choose, including surgical removal of the tissue track using standard general surgery techniques or using a laser for ablation of the fistula track. An anal fistula, also known as fistula-in-ano, is a small channel that connects the rectum to the outer skin of the buttocks. When a fistula forms, it can cause complications for the sufferer, such as irritation, infection, and draining pus and fecal material.
The Potential Causes of a Rectal Fistula
An anal abscess is an infected cavity filled with pus found near the anus or rectum. Ninety percent of abscesses are the result of an acute infection in the internal glands of the anus. Occasionally, bacteria, fecal material or foreign matter can clog an anal gland and tunnel into the tissue around the anus or rectum, where it may then collect in a cavity called an abscess. An anal fistula also commonly called fistula-in-ano is frequently the result of a previous or current anal abscess.
Most anal fistulas form in reaction to an anal gland that has developed a pus-filled infection abscess. Even if your abscess drains on its own, you have about the same risk for a fistula. Certain conditions that affect your lower digestive tract or anal area may also increase your risk.