Hi, I'm Marsha and I've had my permanent ileostomy for almost 60 years, and although I considered it "high output," it wasn't liquid, and I rarely had a problem with dehydration. I ate pretty much everything I wanted, remembered to chew well, and drink a lot of fluids especially during the summer. All was well until about 3 years ago, when I started to have bouts of "the runs," with the output being almost clear liquid, and often had cramps and pains with it. It could last for a few hours, and sometimes a few days. I finally went to a gastro dr. (hadn't needed one for 55 years) and he diagnosed it as a type of IBS. People who have a colon (large intestine) are prone to having it, but for us (those without a large intestine) have more difficulty, since we may not be producing all the enzymes needed to digest the food we're eating. He had me try the FODMAP Diet (google it). It's somewhat complicated, and you need to eliminate many regular foods and restart with basics (protein, bread, carb, etc) basically fodmaps are hard to digest sugars and carbs that are found in many common foods, fruit, tomatoes, lemon, lime, sugars/even artificial sugars. When you reduce your diet to some basic foods (no carbonated drinks or artificial flavored drink) and you see an improvement in your output, give it some time, a few weeks, and then add just one food at a time back. Each time you add something new, consider it a test, just because you have no reaction one day, doesn't mean you may not have a reaction another time. I'm doing it for about a year now, and have had very good results. I may get the "runs" for a few hours, every so often, but not for days at a time. And like you, I've had to be hospitalized to get fluids until the runs stopped. I actually am having an "attack" now, as I'm writing to you, but it's the first one in about 10 months. I can still drink water, so no need to go to the hospital, yet. If I can't hold fluids down, then I go to the hospital. This is all new to me, and I keep hoping it will disappear, but obviously, it's still an active condition. I don't even know what it is that I ate today, that caused the problem. Tomorrow will be oatmeal, eggs, and toast! Best of luck to you. Write if you want or need more info. Look into the FODMAP diet, and its explanation, it's really helped me manage the condition. Marsha