So this happened a long time ago when I was around 15 (19 now) but I made a post on here the other day that reminded me of it and I still have no idea what could have caused it so figured I'd ask.

One day I woke up with no memory, and to this day that is my earliest memory. I didn't know who I was where I was or who anyone around me was, but I wasn't scared by that and I never told anyone. Most things slowly came back to me such as my name and who people were but there were a few things that never did, such as any memory from before that day or even how to sleep (for a while after this for some reason I thought when you closed your eyes you were supposed to hold your breath, so I would lay in bed staring at the ceiling until I would fall asleep with my eyes open or couldn't hold them open any longer and would pass out)

If there's any more info that would help let me know and I would be happy to give it.