I get panic attacks when highly anxious or angry. It usually occurs at work, where I'm more likely to be triggered.
The last time I had a panic attack was a couple of weeks ago, because I'd just arrived at work and got unexpectedly barked at by management over something petty, just after he was being rude and nasty to a good friend of mine, in front of the workplace bully (who thrives on seeing me being yelled at). I suddenly felt intimidated and humiliated by his sudden outburst on both of us, and I began to feel my heart thump in my chest and tears welled up in my eyes. I knew I was about to have a panic attack, so I marched down to the office and broke down rather dramatically (though I wasn't putting it on or anything, as I was genuinely feeling really anxious inside so couldn't help myself). I sobbed loudly whilst bending over in pain from the anxiety that had caused me to get a tight chest and lack of oxygen.
People came rushing from different corners of the office, wondering what was going on. It was embarrassing but it was a full-blown panic attack. I stood up and said through tears that I was having a panic attack, and one of them sat me down and told me to tell him what had happened. In between gasps of breath I told him, and I sat in the chair for a while to calm down. He gave me a drink of juice, which helped.
I was just triggered because my good friend had told me before that if he got picked on by the management one last time (out of many times) then he'll leave, as he had got another job lined up. I really didn't want him to leave, because for one thing I love seeing him at work as we get on well (no, it's not an affair or anything, just good friends), and another thing is that the bully is a contractor who is there due to being short-staffed, and if my friend leaves then the bully will be there even more. And he gets away with being a jerk because he's chummy with management, who also isn't very nice and picks on certain people, such as me and my friend.
Sorry to ramble on, but that is a detailed description of my last panic attack. I'm so prone to panic attacks, always have been.