Wow I swear I have the same problem. I keep trying to convince myself over and over that it is all in my head, nothing is really happening. Even my own doctor called me crazy when I brought up the possibility of any mental side effects.
The problem for me comes with compliance of it all. A little before I got out of pediatric care I stoped doing my tobi altogether because of this reason, and within the last year I only started it up again because I wanted to see if it could really make a whole lot of difference in lung function. It is about to be my "on" month again, but I am now more aprehensive than ever about starting it up again. I am literally obsessive over this one drug alone, nothing else causes me to act/think like this. Did I do well on this test? Why/why not? Did I do better last month on an earlier test? (I know it isn't the most scientific method but it's all I have).
Anyways.. since we are all in the same boat here... now what? Try azli? Try to convince people we really AREN'T Crazy? .. The brain can fool you though... I really just don't know.