I know of one person I've ever met who would get hallucinations from a 102 fever. Every other person I know, including myself, seems to feel like crap but that's about it. Heck, the kids and I all had 104 temps from a flu a couple years ago, and we didn't want to move and felt like were were going to freeze to death from shivering, but even that didn't make any of us hallucinate.

I wonder if just a lot of people take so many drugs to keep down the fever that they don't even know what it's like anymore. :-P