My friend in TX suffers from massive panic attacks and one time they were at Disney and I was visiting her there and I left her at the lobby (because I was driving back home) and she went upstairs to a store and promptly had one - they ended up calling 911 and she had to go to emergency - they thought she was having a heart attack but that one was by far the worst - even she said she thought she was having a heart attack - and she does take medication for her attacks.....I found out the next day and felt awful that I wasn't there to help her. You never know when they will show up.... hopefully you will find the right combo of medicine and relaxation techniques to help you with your attacks.