It's a horrible thing , but I'm sure glad I'm not alone. I was driving professionally for nearly 30 years. In the last 4 years I began having severe panic attacks while on the road , especially when going over bridges and occasionally tunnels as well. It was very confusing at first , because I never had anything like that happen before. I first thought I was having a mini heart attack or stroke. I got checked out and all was fine. But I found that it was happening more and more. If I was on a highway I could at least pull over until it passed. On bridges and tunnels , I found that I would accelerate and go as fast as I possibly could for fear that I would pass out before making it across. The last episode was on the Chesapeake Bay Bridge which I have driven over hundreds of times before. This bridge is over 4 miles long. The panic started as soon as I hit the beginning of the bridge. I just kept thinking - "I'm not going to make it". Generally , I do not talk on the phone while driving , but this was an emergency , so , for one of the rare occasions that I do , I called my daughter , told her what was going on and told her to talk to me until I got over. I made it and pulled to the side , but my hands were shaking and my fingers were locked on the steering wheel. I was close to a full blown asthma attack , I was sweating and my vision was blurry. I have never been so scared.
Long story short , I no longer drive for a living. I can't. Once this starts , it's forever in the back of your mind that this could happen again. I refuse take that kind of risk with lives of innocent people. I should have quit long before , but at least I came to that truth.
I did , however , figure out what the cause was after quite a bit of research and reading what others were saying and back tracking to when it started. I do have asthma. My inhaler med never has given me problems. I had been trying several different cortosteroids to use as a daily regimen. I was allergic to many of them and was put on prednisone occasionally to clear my lungs up til we found something else. Prednisone made me very "up" , kind of jittery. On top of that , as most drivers do I drank a lot of coffee. Thinking back , that is when the problems began. So, if you are having these attacks , check your meds and interactions. You know your body better than anyone. Think back to when it started as close as you can and track it from there. My guess is you'll find an answer.