Deranged, have you and I talked about this before, or am I confusing you with someone else? What you describe sounds a lot like what I experience with PTSD.
We did indeed talk about it before,
Ziyal, and I appreciated it.
The reason I was checking was that I also thought I remembered that you said at the time that you were getting professional help. I agree with the others that that's the way to go.
When I have fight or flight reactions, I try to ground myself -- keep reminding myself exactly where I am, who I am with (if anyone), and that I am safe. For example, the police car lights and sirens freaked me out at a parade last summer. I kept telling myself, "This is just a parade. I'm safe. This is just a parade. Everybody's safe," and I started calming down. And I use similar techniques to get through certain medical exams/procedures.