Random internal dialogue
Whenever I'm concentrating on something or doing some sort of mindless task (e.g. brushing my teeth) I get thoughts that seem to be just "happening" in my head, I'm not willingly thinking them. It's almost always somebody arguing with someone else and it is very clear but completely random. It's sort of like as if the radio was on but instead of hearing it I'm thinking it. Does anybody experience this?
I do have a history of mental illness but I can't directly attribute it to anything, and wonder if it's just a normal thing.