My wife had them for a while. There is a ton of good information out there that is useful. Panic attacks tend to settle themselves on certain personality types (perfectionists), and sometimes there may be a specific event trigger. Both of these characteristics fit my wife perfectly.
In my wife's case, she would typically get dizzy, hyperventilate, sweat, and a whole bunch of other physical symptoms. It would usually happen when I was away overnight on business, at which time she would head to the hospital by ambulance. At the hospital, the doctor would give her a tranquilizer of some sort which would end it quickly. Her doctor prescribed xanax, which she did not take.
Over time, the panic attacks lessened. As the kids got older and more independent, there was less pressure on her. As well, she became more independent herself, running a small business. The confidence building made a huge difference.
Overall, I believe it can be effectively treated with the right medication. I also believe that in many cases it can be overcome, either by therapy or management.