Literally sometimes when there isn't even a threat perceived, my body just starts going to fight or flight mode. I have days where I wake up with panic attacks, even with no nightmares beforehand. It feels like I have ptsd without any real trauma. Sure I had fucked up things that happened to me. I been bullied, groped, robbed at gunpoint, and have been in a few minor car accidents.  I don't think I've had any horrible traumas. I just tried to not let any bad situations bother me. Sometimes when I'm in eerie familiar place but I can't put the name of the place or the event, I'll start having panic attacks. I have no idea why.