Are you currently taking any medications? I had these things as I called Brain Zaps and that is a real symptom of some medications!! please check this out immediantly and let your dr know if you are on any medications. When I was getting these "zaps" my dr told me to discontinue immediantly!
Do you have any kind of nervous system disorder?
I had the same experience you speak of when I withdrew from Zoloft.
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im not on med it happens sometimes when i go out side its not a chill but like one in a little shock
Was reading about a Magnesium deficiency and found that it can cause zaps and vibrations! You might want to look it up on line. It causes so many other symptoms as well.