For me I was diagnosed DDNOS in 2003 or so. I dont even remember why. I went to a different therapist because I couldnt pay for that one anymore. She told me I did not have DID or DDNOS or any type of Dissociative Disorder. So for years I worked on my OCD. I had noticed this part of me that was very sadistic. I named her Thorne but I am still not sure that she isn't a product of Borderline Personality Disorder. My therapist said it was a normal part everyone had. I did not believe her but I dropped it. Then some bizzare things started happening in April of this year. All this chatter ( bizzare thoughts, they dont have different accents or anything its just like me thinking) that didn't make any sense. Mentioning names, asking if they could sit next to me, saying they saw me yesterday. All this weird stuff etc. I told my therapist about it and about Thorne and was diagnosed with DID. I am in therapy now trying to figure out what is DID and what could be something else not because my therapist thinks it is but because I do.