Yep, that was an idea, but aside from the temp, nothing abnormal was detected. It terrified the docs the first couple of times it happened, they were afraid I'd die. After I didn't, they were less scared, but still concerned. No answers ever came. The fevers came with the migraines for about 6-7 years. Only once did it get to that 105 range, probably the third time, never again, and each time it was less. The theory was that my body didn't know what was happening and the immune response of a fever was triggered by mistake.

Yeah, fever is a very unusual symptom to be related to “regular” migraines. Something else was going on there probably.

But who knows? Maybe unusual electrical activity in the brain can cause increased core temp?

Core temperature is controlled by the hypothalamus, which is part of the brain, so that is certainly possible too.