the more you learn from Crohn's sufferers, the more you'll see that it can vary so much from person to person... there are definite issues and symptoms in common, but things such as tolerated foods, severity of pain, level of debilitation and quality of life, can differ so much.. including the fevers... sometimes it can just be an ongoing very low grade fever, with the person feeling a little under the weather... other times it can be so bad that the person wakes up drenched in sweat - this is how i used to be at my worst when i was a teenager - my sheets would be soaking, but by the time i woke i was cold, so i don't know exactly how high my temp went at those times.