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Anal fissure
An anal fissure is a superficial, but painful tear in the anal wall.

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Anal fissure

An anal fissure is a tear in the lining of the anus. It can cause severe pain during and after a bowel movement. The pain can last several minutes to several hours, and can recur with each bowel movement. Traces of bright red blood on the surface of the stool or on the toilet paper may also be present.
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