I was diagnosed with Collagenous Colitis. It took forever. I had the diarrhea for almost a year. Budesonide stopped it. I finished the regiment and it came back immediately. Continues for another 6 weeks and finally went off of it and all was calm for about 4 months and the watery diarrhea was back. That has repeated and I only get 3-4 months in between. I hope this isn’t going to be the rest of my life.