question: It starts with a painless explosion (for lack of a better word) in my solar plexus, with a hot rush going up the back of my neck and head to my forehead. I sweat, get dizzy and don t think straight. A few times I have passed out, but only for a few seconds. Then I get up feeling as if nothing happened. More often (and this could be panic from the sensation) I feel like I cannot breath, though I know I can, and my heart pounds so hard I can see my shirt moving with the beat. If I lay down it feels like my whole body is pulsating. There is NO pain involved. I have been to a heart specialist a few times and apparently my heart is fine. These bouts can last a few minutes to a few hours. What do you make of this?