Hello to both of you,
I just wanted to maybe give you some hope because I used to have the same problem but am now more or less 'normal'. I also had undiagnosed symptoms and dizzy spells.
I actually realised that it was my paranoia about my breathing that was bringing on my panic attacks. I would feel like I was fighting to breathe, that I was breathing too much or too little.
When you breathe funny, you affect the amout of carbon dioxide and stuff in your brain, which in turn makes you feel even screwier. Then with the panic on top, used to turn me into a wreck. But I'm still alive!
Just think, your body keeps you breathing all the time you are asleep doesn't it? I used to wake up panicking that I'd stopped breathing. I now realise this was all in my head.
It is difficult at first training youself to stop thinking about it. Because once you realise you haven't though about it, you're then thinking about it!
What I used to do is challenge the thought. Like "come on then! Do your worst! Is that all you got?!" It didn't always work but over time it got better. Once you start to feel silly it becomes easier. Try making a stupid noise. Sounds stupid, and you feel really stupid doing it, but that's the idea! The ridiculousness of suddenly shouting "PAAARP!" breaks the tension of thoughts in your head. Try it!
I am still an anxious person but I haven't had a full blown panic attack in ages (touch wood!)
I wish you both the best of luck in getting rid of your anxiety...