It's called "dissociation". One of, quite a few symptoms of trauma.

"the disconnection or separation of something from something else or the state of being disconnected."

I call it the 5000 yard gaze. I can see a rabbit, in the tree line, 5000 yards away!!.(just kiddin'). Vietnam Vets call it somethin' different. That's cuz I went in as a tanker, then combat engineer and ended up as cav scout...oorah...scout's out....

I suggest? a B.C.E.T.S. in the private sector, for therapy, if interested. Oh, and writing? yes. I have a few black and white speckled composition books filled full of writings. I call them "street rhymes and bullsh@t".