Hi,
I feel for you, I used to be much worse and it changed my whole life from the course it was to take, because while going through this I just couldn't manage.
I understand everything you have said, the way it happens, things affecting it more, the meds and the going in places kicking it off.
I went on herbal stuff, St Johns-wort, Starflower oil and passi-flora. I also got a tape by Albert Smith to help with going out and it did really help me.
I don't know what it was called, he does a whole range of self help and mine was for the panic attacks, I think it was something like " stop panic attacks " if you google it you may find it on ebay cheap, I lost mine and I did the same afew years later when I started to feel bad again. It feels wierd at first but I found by the 4th time I started to listen and within 3 weeks I found myself shopping and doing things he had said without even thinking about it.
He explains about the " flight or fight " response it really does help.
I still get little bouts of anxiety when I am stressed but I have not had a panic attack since doing his tape the first time which was 14years ago.
Please give it ago your life can be so much better than it is right now, I am now happy, married, with 3 kids, I work for myself, nice home and travel all over the world on family holidays. I have been places I never thought I would ever see.
I will check you from time to time if you want to chat
I hope you do well
Gypsygirlxx