Everything about
Fistula
An anal fistula is an abnormal, small tunnel that forms a connection between the inside of the anal canal (where stool passes) and the outside skin near the anus. You can think of it as a narrow tube left behind after an infection. Most fistulas are the result of a previous infection in an anal gland that developed into an abscess (a collection of pus). Even after the abscess drains and heals, this small tunnel can remain open, causing ongoing discomfort and discharge.
Causes of Fistula
The most common cause of an anal fistula is a healing issue following an anal abscess. However, there are a few other potential triggers:
-
Anal Abscess: An untreated or incompletely healed pocket of pus in the anal glands is responsible for the vast majority of cases.
-
Inflammatory Bowel Conditions: Conditions that cause chronic inflammation in the digestive tract, such as Crohn’s disease, can increase the risk.
-
Infections and Trauma: Rare infections like tuberculosis or sexually transmitted diseases, as well as trauma or complications from previous pelvic surgeries, can occasionally lead to a fistula.
Types of Fistula
Fistulas are medically classified based on where the tunnel is located and how it interacts with the anal sphincter muscles (the muscles that control bowel movements). Understanding the type is important for doctors to determine the safest treatment approach.
The main types include:
-
Intersphincteric Fistula: This is the most common type. The tunnel begins between the inner and outer anal sphincter muscles and opens on the skin very close to the anal opening.
-
Transsphincteric Fistula: In this type, the tunnel starts between the inner and outer muscles or in the space behind the anus, and then crosses through the outer sphincter muscle to open onto the skin.
-
Suprasphincteric Fistula: This tunnel begins between the inner and outer muscles, travels upward above the main sphincter muscle, and then curves downward to open on the skin near the anus.
-
Extrasphincteric Fistula: This is the rarest type. The tunnel begins higher up in the rectum or colon and completely bypasses the anal sphincter muscles to open onto the skin. This type is usually caused by an underlying condition like inflammatory bowel disease, an infection like appendicitis, or trauma.
Symptoms of Fistula
Fistulas can be highly uncomfortable and significantly impact daily life. Look out for these common signs:
-
Pain and Tenderness: A constant, throbbing pain in the anal area that often gets worse when you sit down, move around, or have a bowel movement.
-
Swelling and Redness: Noticeable inflammation of the skin around the anus.
-
Discharge: A foul-smelling drainage of pus or blood from a small opening in the skin near the anus. (Pain often decreases temporarily after this drainage occurs).
-
Skin Irritation: Severe itching and soreness around the anal opening due to the continuous discharge.
-
Fever and Chills: If the infection is active, it may be accompanied by a general feeling of illness or a mild fever.
Prevention of Fistula
While not all fistulas can be prevented (especially those linked to underlying conditions), maintaining excellent anorectal health can significantly reduce your risks:
-
Treat Abscesses Promptly: If you notice a painful, swollen lump near your anus, do not wait. Seek medical attention immediately to have it properly drained and treated before a fistula can form.
-
Maintain Bowel Health: Keep your digestion smooth by eating a naturally high-fiber diet, staying well-hydrated, and exercising daily.
-
Avoid Straining: Never force a bowel movement, and do not delay going to the washroom when you feel the urge.
-
Practice Good Hygiene: Keep the anal area clean and dry, especially after bowel movements, to prevent infections in the delicate anal glands.
Treatment Options
Unlike a minor tear or mild swelling, an anal fistula rarely heals on its own. It almost always requires professional intervention to clean the infected tract and allow it to close completely. The goal of treatment is to cure the fistula without damaging the anal sphincter muscles.
Ayurvedic Treatment Options
Ayurveda offers one of its most highly regarded and time-tested therapies for this specific condition, focusing on healing the tract from the inside out:
-
Specialized Thread Therapy (Kshara Sutra): This is the gold standard in Ayurveda for treating fistulas. A trained practitioner inserts a specially prepared, medicated alkaline thread into the fistula tract. The medication on the thread gradually cleanses the infected tissue, cuts through the tract, and promotes simultaneous healing. It is a minimally invasive procedure known for a very high success rate and a low chance of the fistula returning.
-
Warm Herbal Soaks (Sitz Bath): Sitting in warm water mixed with natural antibacterial herbs helps maintain local hygiene, reduces swelling, and provides significant pain relief.
-
Digestive Support: Herbal supplements and mild laxatives may be prescribed to ensure stools remain soft, preventing any unnecessary pressure or strain on the healing area.
Allopathic and Surgical Management
Modern medicine provides highly effective and structured surgical solutions to permanently close the fistula tract:
-
Fistulotomy: This is the most common and effective procedure for simple fistulas. The surgeon opens the entire length of the tunnel, allowing it to heal flat from the bottom up.
-
Seton Placement: If the fistula passes through a significant portion of the anal sphincter muscle, a piece of surgical thread (a seton) may be placed inside the tract. This keeps the tract open, allowing pus to drain completely before a final repair is made.
-
Minimally Invasive Techniques: Modern procedures like the LIFT (Ligation of Intersphincteric Fistula Tract) or the use of special medical glues and biological plugs offer advanced ways to seal the tunnel while safely preserving the anal muscles.