Work related stress - deadlines, quotas, public speaking.
Pressure to perform at work has led to my panic attacks. Unrelenting push to achieve sales quotas for my sales team and me, report deadlines, speech preparation, speaking to large audiences and such.
I find myself not breathing properly, talking too fast and having general anxiety. This has caused me to have panic attacks in small places like small rooms and airplanes and before speaking to large groups.