Could I ask a question related to my collagenous colitis? I have been running a low grade fever every afternoon/evening for some time with this. It would disappear when I was on budesonide, but when we stopped that, it was back. Since July-August. By low grade I mean between 99.5 and up to (once) 100.7. Mostly it's 99.5-99.8 or 100. It comes in the afternoon, often goes through the early evening and then leaves later. Has anyone else had this kind of fever? One of the medical people I've seen thought it might be due to inflammation, but mostly they just note it down, seeming not to know what it means. I find it oddly debilitating -- it makes me feel lethargic and weak.