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Your doctor will ask about the history of your condition and perform a physical exam, which may include using an anoscope to view the anal canal.
The fissure's location offers clues about its cause. A fissure that occurs on the side of the anal opening, rather than the back or front, is more likely to be a sign of another disorder, such as inflammatory bowel disease.
To rule out other disorders, your doctor might use a:
If the fissure is especially painful, you might be given sedation or general anesthesia for the examination.
Read more about flexible sigmoidoscopy at MayoClinic.com
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