Wow, timely thread. I've dealt with these on and off over the years, but hadn't had an issue in awhile until a week or so ago when they started popping up again. The descriptions are spot on: tightness of the chest, feeling like you can't breathe, racing heartrate, particularly the feeling of my throat closing up. When this is happening I won't even try to eat, since it feels like I'll choke if I do. A few years back I had my wife drive me to the ER, which scared the shit out of her, but it truly feels like you're dying. As many of you have said, tests were fine, just in my head. As far as dealing with it, other than just riding it out, exercise has typically helped, something to force you to focus on something else. No matter how many times I've gone through it, just telling myself its in my head doesn't cut it (although I have yelled that at myself as someone else stated, totally get that). Anyway, appreciate seeing these stories from everyone.