13 doctors weighed in:
Can you explain the difference between anal fissure and anal fistula?
13 doctors weighed in

Dr. Scott Browning
Surgery - Colorectal
6 doctors agree
In brief: Tear vs. Tunnel
An anal fissure is a tear in the lining of the anal canal, just inside the opening, and typically causes pain and bleeding.
An anal fistula is an abnormal communication (tunnel) from inside the anal canal out to the perianal skin, usually the result of a prior perirectal abscess. It may cause drainage, swelling, discomfort and recurrent abscesses. Both are treatable conditions.

In brief: Tear vs. Tunnel
An anal fissure is a tear in the lining of the anal canal, just inside the opening, and typically causes pain and bleeding.
An anal fistula is an abnormal communication (tunnel) from inside the anal canal out to the perianal skin, usually the result of a prior perirectal abscess. It may cause drainage, swelling, discomfort and recurrent abscesses. Both are treatable conditions.
Dr. Scott Browning
Dr. Scott Browning
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Dr. Joshua Katz
Surgery - Colorectal
5 doctors agree
In brief: Fissure and Fistula
A fissure is a tear in the anal canal lining caused by straining, and hard stools.
It is treated medically or surgically. A fistula is abnormal communication between the anal canal and the skin. This is usually related to an anorectal abscess. It should be treated surgically. If it involves crohns disease, special medical therapy may be used.

In brief: Fissure and Fistula
A fissure is a tear in the anal canal lining caused by straining, and hard stools.
It is treated medically or surgically. A fistula is abnormal communication between the anal canal and the skin. This is usually related to an anorectal abscess. It should be treated surgically. If it involves crohns disease, special medical therapy may be used.
Dr. Joshua Katz
Dr. Joshua Katz
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Dr. Allen Kamrava
Surgery - Colorectal
1 doctor agrees
In brief: All Different
Fissure: think paper cut in your anus hemorrhoids: think varicose veins in the anus fistula: much more complex - think aberrant tract from rectum to skin that shouldn't be there.

In brief: All Different
Fissure: think paper cut in your anus hemorrhoids: think varicose veins in the anus fistula: much more complex - think aberrant tract from rectum to skin that shouldn't be there.
Dr. Allen Kamrava
Dr. Allen Kamrava
Thank
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