I have panic but I would not relate it specifically to (visual) flashbacks, which are pretty rare for me. I don't think they last long, and I always am familiar with what I'm seeing, but with details I'd never think to remember (colors of things, clothing, etc). But most of all it's like being an observer, and most of all identifying what I was feeling at the time (which I would say is often horror, but I wouldn't say panic, though panic is something that could follow, if one felt there was anything they could do about it). Also grief, etc, 'negative' emotions, probably always fear, a sense or reality of helplessness. But the strangest thing is, I can easily name what I felt during the repeat, (the FB), and sometimes it's news to me (I didn't recall feeling that, even if I recalled the memory, without the same detail), and I swear I'll never forget, now that I know or have learned it. But like not writing down a dream, usually shortly after for the life of me I can't remember what I felt, or learned, and sometimes the details. I sometimes wonder if I feel like that in the moment and don't realize it, and then something triggers it, and I recall a memory wherein I felt the same ( that is, (emotional) state-dependent-recall)? Idk. I just know what I am feeling during it is based on what I guess I felt then, and panic isn't the first one I'd choose. Horror, shock, gruesomeness, sorrow, abandonment, more like that.
I'm not even sure what I felt, unless I'm having it? I remember seeing a person dying who didn't die's face, and I can recall the horror and the 'look', but I can't say what else I felt now.
I don't think I normally have the exact same visual FB twice, other than snapshots.
But, even today (irl), I thought in a flash second someone had died (fortunately they hadn't but it was a fair assessment), and it came to me OMG , also a sense of gruesomeness, what would follow, and mobilization to act, but not panic.
Not sure if that's helpful. :confused:
Welcome to you
@Coffeegirl83 . Hope they abate. :hug:
ETA
@grit , I'm sure dissociation likely could play a role, but in everyday life I think panic may be related to expectation of one's self to solve whatever problem is occurring, but knowing no way to do so. Amongst other things.