ok, this is something that has only happened to me twice, and both times it's happened at a concert. the 2nd time was probably worse than the first
what happens is, i'll get a little dizzy and light headed, and then all the sudden i get nauseous. i sat down with a water bottle, and something would happen with my hands.. ill try my best to explain it.
they'd tingle, and they would go stiff... but my fingers would get pushed all ontop of each other: my middle finger is on top, the ring finger and pointer under it, my pinky under that and my thumb gets pushed under towards my pinky (did that make sense?)
the tingling went up my arms, and i could feel it in my feet and my legs, and my legs would start shaking.
having the water helped a little bit, but i was given some hi-c drinks and some food and everything was back to normal
everyonce in a while now i'll feel a little light headed, so i know i'm not 100% still
but i dont know if it could be hypoglycemia? hyperventilating? i dont know!