Yes, I'm developing it more and more. I'm trying to tell myself, out loud, what I should be getting in the other room, in order not to forget it. and then I stand there, saying the word, again, and again, and no meaning passes through.

Yes. Sometimes I can actually be watching TV with my eyes open and realize I don't have any idea of what just happened in the last few minutes oof the show.

Also can be embarrassing

Yes, I do the same thing! I usually start with the uncontrolling stare. I also can't remember anything!!!

I just started "suttering" a few years ago. My daughter has to tell me to take a deep breath and relax. I did not realize it could have to do with my Narcolepsy. I do get overwhelmed more now though. LOL
I am going to let my daughter know this so she can relax more.