I had a couple of panic attacks about a month ago, but they weren't too severe. The first one I had was devastating, because I also had a high fever from mono. I went into the ER and they gave me some Xanax. My last one hit out of nowhere, but I was able to quell it without using my Xanax. I just turn everything off, put my head in my hands, close my eyes, and start breathing really deeply. The controlling my breathing part really helped, because the feeling you get when those hit confuses the fuck out of you, and it felt securing to have control over that. Ever since then I haven't had one or a hint of one, but I never want to experience that again. Just my 2 pennies.