i was at the mall and all of a sudden i felt really dizzy and my hands started shaking. I have felt this before so i ate a energy bar and this did not help like it normally does. My vision got really blurry and my legs just collasped and i started sweating , and got really hot my hearing got buzzy. I sat there for about 20 minutes before i felt a little better. When this happened i could not concentrate at all and it felt like a out of body exprience like a dream almost. This has happened before but never like this can someone please help?