I am not sure if this is same, but I have internal dialogues...I always assumed the voices in the dialogue were my and really a monologue....I will have to pay closer attention....never thought anything of it, because it's always been there.

It's happens all the time....when I am gaming I will have internal dialogues what about do next in the game....when laying in bed at night, I will tell stories, make up things....discuss things with myself...I guess.

Interesting....sometimes this is a reason I can't sleep--the dialogue won't shut off....it's constantly going on....all the time...and it rather chattery from time to time....but this maybe normal....IDK.