Luckily I don't have flashbacks anymore but when I did I felt exactly like I was re-living moments from my childhood. It felt very real. For example, one I remember vividly was my dad standing in front of me screaming in my face. I could see the veins throbbing in his neck and feel the little drops of spit flying. When I "came back" I was totally disoriented and almost fainted in the shower.