I guess the story is long, but I'll shorten it as much as I can.
I started noticing my accent was changing when I didn't mean it to or want it to about two years ago. It started off as saying some words in a thick Boston accent. Classmates started making fun of me and I didn't realize how thick the accent could be. For some reason it kind of went away. I still do it sometimes, but I don't know why.
A year ago I went to one of the world's best psychological trauma hospitals. One night while I was in the shower there I started thinking of it and accents. The next morning I woke up with a full, seemingly authentic, and somewhat thick Scottish accent. I don't even know any Scottish people. For the next two weeks or so I couldn't get rid of it no matter what I tried. It really started to worry me, especially because I was going to be discharged soon and how on earth do you explain something like that. I was finally able to control it in a way when I noticed the Scottish accent was a different tone. Like if I talked in a certain tone then it was Scottish. I was able to get rid of it completely in a month or so by consciously talking in a different tone.
Ever since it first started I've been asked about where I'm from or what I accent I have. I've had comments from like "Are you from Europe or Britain", "Where are you from", "What kind of accent is that", and people genuinely confused at how accent can change.
Most of the time I think it's just certain words or phrases. Or moods. But I have no idea why it happens.
I guess I should note, I'm terrible with accents. Like I've never been able to talk in one before all of this started.
I have Dissociative disorder DDNOS.
The guy who ran the psychological trauma institute had no idea what it could be. Or didn't say if he did know. Neither does my world class psychiatrist. But they've ruled out conversion disorder pretty immediately. I had some brain MRI's done and everything appeared normal.
Does anyone know of anything like this? Or have any suggestions on who to see about it? Really anything at this point...