Vickie, I agree, it sounds like yu are dissociating for some reason. I had a firend who would getinher car, take off for the grocery store, and call me panicked at two AM some where out in the desert with her car and no idea how she got there. Thank God, she didn't get hurt, but it was not an easy thing to deal with. How long does this tend to last, I mean, what's the time gap? I do a more minor varient of it, but it's usually when I am tired and moderately upset about something. Music is a big trigger, but smells and shifts of the light can do the same.
Yep, it is a component of PTSD and shows up hand in hand with other anxiety disorders as well.
If you can, talk to your T. I think personally it's a gift; there were some situations in my past I would never have come through if it hadn't been for an ability to put myself elsewhere and let the cold analytical part take over. Not everyone can step outside and give the brain that type of break. Of course, there are safety issues, so I anderstand your concern. Huggs, I think you're ok.