Elegran - you are verging on the insulting now. My disability is Jt a ' dirty little secret' and there is no way I feel second class because of it. What would make me feel second class would be someone, as in your example, asking me at a social do what was the matter with me? What they should be doing is asking me the sort of questions they would ask say one else - about my job, where I've been on holiday, my dgc etc. Asking about my disability means that is how they are seeing me and I am way more interesting than that! I have to say though that if I had my arm in plaster, for example, I would understand someone asking how it had happened - somehow that doesn't seem so intrusive although I accept that might be a tad 
What makes disabled people second class is being treated differently when it's not appropriate or relevant