(((Bowhunt))) I am sorry that happened. It's happened to me. I just was praying in my head to get away from everyone before I totally freaked out. I didn't want anyone to know. In fact, I think I wrote about this before, but the first time I had a major incident, I thought I was having an MI. I was too embarrassed to tell anyone so I drove myself to the ER

The ER doc did all the stuff and it turned out I was having major anxiety/panic due to stress, and he gave me an Rx.

After that, I would have anxiety/panic attacks out of the blue and not know what in the **** was happening! (But at least I knew it was Anx and not an MI)

One time, I was just simply driving to work, and all of the sudden it came on out of NOWHERE (like with you) like a freight train. I quickly pulled into a gas station having a full-blown anxiety attack ... I opened the car door, threw my legs out and put my head down while hyperventilating and panicking, sweating, the whole 9, etc.

Some people stopped to look at me, and all I could say was, "If I faint, call 911". I had NO idea what was going on.

So I believe what you are describing IS PTSD. Anx/Panic Attacks sneak up out of nowhere by a certain "trigger" (in this case, for you, the singing), and then you have the sudden horrible memories/flashbacks of a Traumatic Experience (car accident).

To this day, I still don't know what triggered the major anxiety attack while I was driving, but at least I understand the "process" now.

Oh, and by the way, try not to worry about what other people think .... just try to tell yourself in your head when you feel it hit you (or coming on) "I am safe" over and over again. Your brain is remembering the Trauma through the trigger, and the anxiety is the exaggerated fight or flight feeling which causes the panic / anxiety attack = PTSD.

I hope you are able to work on this with your T. Perhaps you will be able to learn what it was exactly about the moment (singing) that brought on the anxiety and flashbacks.