I thought this was kind of interesting so I thought I'd share. So I've been dissociating since before I can remember. I don't have any specific memories of it from when I was younger but I know I've done it since I was little, depersonalization and derealization included. I never told anyone about it then because I didn't know there was a word for it and I didn't know how to describe it. But the derealization made me thing everyone around me didn't exist, so my child brain assumed the world around me and everyone in it was a figment of my imagination, I went for I don't even know how long thinking the entire world was imaginary. Yeah I was an odd child.