Anus fistula in painful pus yellow
An anal fistula is a small channel between an infected gland in the anus to the skin near the anus, and it is often caused by an abscess in the nearby tissue. Symptoms of an anal fistula include irritation, pain and discomfort around the anus. It usually will not heal by itself, and will often require surgery. GP Dr Roger Henderson looks at what an anal fistula is, causes, symptoms, and what to expect from treatment. An anal fistula is a small channel that runs internally from an infected gland in the anus, near the end of the bowel, to the skin near the anus.




Anal abscess and fistula




Anal Fistula: Causes, Symptoms, Diagnosis & Treatment
The anus is that part of the intestinal tract that passes through the muscular canal of the pelvis and anal sphincters. It is the final orifice through which stool passes out of the body. In adults, the anus is 4 to 5 centimeters long. The lower half of the anal canal has sensitive nerve endings. There are blood vessels under the lining, and in its mid portion there are numerous tiny, anal glands.



Perianal Abscess/Fistula Disease
Perirectal abscesses and fistulas represent the acute and chronic manifestations of the same disease process, an infected anal gland. They have beleaguered patients and physicians for millennia. A thorough understanding of the anatomy and pathophysiology of the disease process is critical for optimal diagnosis and management.





The intestinal tract or bowel ends with the rectum. It ends with the anus — the opening to the outside of the body. There are several common problems, including hemorrhoids, that can occur in the area from the rectum to the anus. While almost everyone has heard of hemorrhoids, the other conditions are not so well known. Most people have experienced a tear or fissure at the corner of the mouth that can occur in cold weather or when yawning.

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