Oh Googley that SUCKS! I know you can't tell a psych teacher that you have a need for accommodations due to an anxiety disorder.. I know that it's not "appropriate" in the mental health field to openly admit a dx unless you really trust the prof and have a very personal relationship. I told my boss (a grad school psychology prof) about my OCD only because I wanted to wait another year before starting grad school to deal with my crap, and so I needed to tell him I wanted to work for him for another year, and the reason why. But I only told him the truth because I knew he would be accepting. Some are not so understanding. And it sounds like he's not one of the accepting ones.

Googley living with a disorder does NOT make you unfit to be a therapist. Even the dx you fear. Oh wow we have SO much in common -- these are all the things I've been trying to tell myself. I know you are anxious -- but here's the thing. Email him NOW to set up the meeting. I know you are anxious, but avoiding him (as you know) will increase the anxiety because you will know that you aren't performing as you should because of your avoidance. Show him that you ARE prepared and capable, and that anxiety isn't getting in the way of your research capabilities. Prepare for your meeting with him. Read up and really get yourself oriented for the meeting. Don't let yourself fall behind. BUT HOLD THIS LIGHTLY. Hold *everything* lightly. Prepare, but don't go to extremes. But go in knowing what you're talking about. Breathe deeply. And talk with your T about this. THIS is a big deal and something worth discussing in therapy.