How is opioid-induced constipation (OIC) diagnosed? 

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Opioid-induced constipation (OIC) is the most likely diagnosis if your constipation symptoms began around the same time you started taking opioid medications. Gastroenterologist Dr. Jeanetta Frye describes what questions your doctor is likely to ask about your constipation, including your daily routine, exercise, intake of water and other fluids, and diet. She explains how a rectal exam can be important to look for other possible causes of constipation.