I have episodes that occurred 3 times last night and twice the night before when I awake from sleep and my thoughts are strange then suddenly a tingling/numbing sensation runs from my head to toe and I m immobile for a moment, then I break out in sweat. Sometimes I black out for a moment and I m left feeling weak and faint. Then it passes as quickly as it came and I feel normal. Each episodes only last about 2 minutes then it s gone. I ve had 2 epidural injection shots in my neck from 2 bulging discs inC5&6. I ve had this to happen about 6 weeks ago for 2 nights and then this pass 2 nights. I ve had EKG, ultra sound on my heart, worn a heart monitor and had blood work done for hormones and everything else, nothing is wrong with any of the test that I ve had done.