Ouch. My wife, her sister, and her mom all have this. Her mom had her colon removed in the 90s, the others struggled with it until they went to a gluten-free diet. Now, if they accidentally have gluten (typically from a restaurant), it comes back with a vengeance but at least it passes after a day or so. There are drugs that can help this, like Humira, though Humira is very expensive. Humira essentally keeps the lights on at Abbvie, a company that employs over 20,000 people!