Hi Faerie,
I know this is the obvious question, but do you think that any med adjustments might help? I am seriously considering talking to my pdoc again (saw her last week) because I am so tired of thinking one word and having another come out of my mouth. I absolutely hate it, because my words aren't conveying my thoughts.
It seems that you have a similar, but more complex problem because your words won't come out when you speak or type, and you are confused-at least when I type, my fingers can put down the right words.
One more thought, are you sure that this is a part of having bipolar? It sounds like some pretty serious brain stuff going on, and I know how intelligent you are.
I hope that you will explore the causes with your doctors. I'm sending hugs your way.

Bluemountains