Hello. I just want to say that, as someone who is a DID sufferer and studying psychology currently in university, alters actually can and often do continue to be formed beyond childhood if the trauma was never dealt with and/or if the emotional instability from the event/events never faded, along with other reasons. However, in order to be diagnosed DID, your first alter at least did have to form during childhood. I cannot speak for OSDD-1/DDNOS, as I haven’t researched those as deeply, but.

Interesting. My information on alters having to be formed from childhood comes from @this-is-not-dissociative and other such blogs. I am unable to retrieve the exact…