Anytime I had tests, it was during a headache free moment.

I'm curious if test done while enduring the great pain would show anything?

This is a very good question. I would like to know more about this too.

Seaworthy, that's an interesting picture but I'm really new to all of this. I found a 3d image of the hypothalamus on some wiki page but this doesn't really tell me anything. Was this image taken during an attack?

What does it mean? What happens here? What does it tell?
I'm sorry, I'm probably way too enthusiastic if that's how one can call it. It's just... it's the first time it feels like I'm getting a grasp of this.

I understood that the current theory is that there are subtle changes to the hypothalamus during a cycle, and those changes are what make us susceptible to individual attacks.  Then, during the remission periods the hypothalamus returns to a more normal state.  This is from memory of reading, so I could be mistaken.