I had panic attacks regularly for about 10 years, starting at age 18. For me the biggest symptom was a feeling of unreality, with a big adrenaline rush. Like being buried alive, but nobody else can see it. The attacks kept me out of airplanes, concerts and malls for a long time. Doctors tried lots of drugs on me, and some had awful side effects. The one that finally worked for me was Prozac. It put a floor under my attacks, made them about 10 times less severe. That gave me the courage to get back out and do things again, even flying to Europe for work.
I still remember my last panic attack, I think it would have been around 2004. I was totally fried from a flight that left Atlanta at 10pm and landed in England at 11am, and I had to go straight to the vendor’s office in Cambridge. The problem they sent me to fix was really outside my area of expertise (HTML performance issues). I was on the floor of a bathroom stall at one point, standing up was not happening.
After that…it seems like the demon just left. I get anxious when I travel overseas, but I haven’t had an “attack” since that one. I feel for anyone who’s suffering through panic attacks, because it’s almost impossible to describe to someone who hasn’t lived with them.