The symptoms of a panic attack are very varied. If you suffer them, then they are the most important thing in you life and you only want to go rid of them. You may have a heavily pounding heart, or an oppression on your chest with difficulty to breathe. Or you are sweating.
These symptoms are the expression of emotional problems. And, the good thing about is: they are nothing else than energy. Energy in the wrong place. If, at this point, you try to get rid of them, they will become even stronger.
So what? What can you do? Take three deep breaths, inspiring by your nose and exhaling through your mouth. Think of energy you are throwing out from your system. Try to do that as often as you can and you will feel relief.