I'm not sure if this is what it is but every now and then I get a sort of shaky thing...I feel a bit sick, need to go to the loo, and I can't stop shivering. it passes generally after maybe an hour or less - no temp, just seems to be sometimes after I have had chocolate - maybe after a few days without - or else, what I thought it might be is vitamin C as I have noticed it is sometimes after having that after a break.
I used to get like this when I was in my early teens and my mum would sit beside my bed till it passed - we called them panic attacks. Maybe that's what they are, it's plausible - but I wonder if they are triggered by something I eat?
Sorry for typos am a bit shaky..
I often eat chocolate without any problems btw.