first from solnutty's post...

have I ever had an alter form in adulthood...

not dissociative related. At one point I thought so with this one alter because it was like one day she was just there, but then I discovered she had been there all along, i just did not have co consciousness with her until that moment.

another type of alter did just show up one day... an introject alter. I had been having an extremely stressful day and suddenly this voice was talking to me. thats when I discovered anyone can have an introject show up in their lives due to all kinds of reasons.

I asked my treatment provider how do I tell the difference... I was told my DID type alters will not just show up one day. that in my location and culture DID is the result of extreme abusive trauma that results in a person having dissociation symptoms and their personality dividing dissociating things like events, memory, emotions. if I dont have any recent extreme abusive trauma's like that of when I was a child then I would not have a new dissociative alter forming. considering I was not a child with a child's brain (my brain has evolved and grown physically capable of handling adult issues) and that I was not undergoing the same extreme trauma's that resulted in my becoming DID, and my therapy goals was focused on using grounding techniques when triggered the odds that I would have a new alter form in adulthood was zero. That doesnt mean i would not have alters that I wasnt previously aware of, because of how DID affected me there would be alters that may show up that have been there all my life just my not being aware of them because of my limited co consciousness with my internal system.

(boy was I relieved) after that when ever someone new to me showed up I just reminded myself that if its a DID type alter in me they have been there all my life just beginning to be co conscious with them of they are my psychosis induced type alters like introjects and those because of my other health issues and medications.

next question which of my alters was the one I became aware of first... there is no way in me to know that answer. I grew up with DID so everything about it was my normal. as far back as I could remember I could hear voices and had dissociative symptoms.

I do remember the the opposite of this question....the first integration. it was my alter Sunny. one day I realized I was laughing. I mean really laughing not this half laugh because it was expected and I knew I felt happy and could feel sunny laughing. it was a full amandalouise / sunny combined sounding laughter. I realized at that moment that I could remember everything that had previously been sunny's memories. At the same time I realized I could express pain and pain memories too that day after accidentally hitting my finger with a hammer while hanging things up. With Sunny I just accepted it,. with the painful one that was unusual for me to feel a full range of pain and have pain memories so I called my treatment providers.

but remembering who was the first alter no idea.