Hi Steve,
I have been having panic attacks for nearly 3 years now. I used to have numerous full blown attacks every day. Now I dont have the full blown ones as often, maybe 2 or 3 times a week. They could last for up to an hour and sometimes 1 would roll into another 1. I am just on edge 24 hours a day now, constantly scanning my body for the symptoms etc and holding tension everywhere. Hope this has been of some help to you. If you need any more info, just let me know.
Take care