They never could give my mom a definite reason and asking her to recall my health info is like pulling teeth.
I used to have to take grahm crackers and stuff to school so if i felt like i was going to faint i could eat them but i am not sure that even helped.
Usually i have to lay down and put ice cold wash cloth on my neck and drink ice cold water. And it takes a good but of time for it to pass.
I had an episode once this year and probably once a year but as a child it happened alot. Especially when i would be standing in one place for a longer period.