Agreed with outrage... except, it comes down to your medication level and peak flow... check with a pulmonologist...
Although this was Mark's site I would still recommend you go through and read
www.zurichdivers.com simply because there are many useful articles about diving in Switzerland and dive training on there.
I started to dive to "cure" my water phobia... at the time I did the course the simple thought of being next to the lake was enough to have me in a state of hyperventilating panic. But with an excellent instructor you'll be amazed... and yes I had the best
It was enough to inspire me to go on with my training to professional level and had I not had to stop for other medical reasons I too would have been in the caves.
Anyway, my point is this, find a good instructor who will take his/her time and avoid big groups... get medical clearance and try it out. Maybe a simple discover scuba in a pool would be a good start.
And hey if you want some honest opinions with no commercial motivation behind feel free to ask me...