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By Mayo Clinic staffSolitary rectal ulcer syndrome occurs equally in men and women. It can affect people of all ages, but appears to be especially common in middle age.
Although the cause of solitary rectal ulcer syndrome isn't clear, conditions such as chronic constipation, straining during bowel movements, rectal prolapse, and using your finger to remove stool when you are constipated may increase your risk of rectal ulcers. Although these conditions have been associated with increased risk, you can develop rectal ulcers without any of these conditions.