i dont believe panic attacks have to be full blown. i learned this technique a while back and once i got it down, i havent had too many problems with them since.

a way to stop panic attacks is to relax. it is physically impossible to panic and relax at the same time. you dont even have to really relax. just fool your brain into thinking you are relaxing since it is the chemicals in your brain telling you to panic. imagine as if you just did a meditation or had a massage and all your muscles have turned into limp noodles. just let them all go. this will stop the panic attack. you may have to do it a couple times over your first tries.

i did this first in an elevator. i was seized with a panic attack and i remembered this technique. so i went limp noodle and shock of all shocks, it worked! then the panic attack took hold again, so i went limp noodle again and it stopped again. i was amazed. then the panic attack hit again. so i went limp noodle again and by the time i hit the 5th floor where i was getting out it was over. i must have looked real funny going rigid, limp, rigid, limp over and over but it taught me that it worked. good luck!