> I'm curious if anyone has ever had these experiences before? Either the complete and total loss of self, and/or the recreation of a sense of self by going through stages of child development? Is there much research on it? It has been an extremely bizarre experience.

I can relate to this. I haven't met others in person, but I have read about it here at PC a bit. Uncomfortable, bizarre, both good descriptions. Near complete loss of personality. Older now so I can point to some causes. Having the floor disappear beneath me at a young age seems to be my cause. Begain in mid teens. Back to infant stage. Knew words but couldnt form meaningful sentences with them. Ongoing rebuilding. Difficult. Slow, slow progression back to self identity. A lot of heart break and confusion. Still manage to work and function with few knowing but odd relationships. Life seems not all it could be, or should be and I always feel like I can get over this hill, that things can still return to normal. Serious bouts of depression. Now 30 plus years of it.