Oh my god, that is so stressful to be considering. I really get it.. and I have disclosed at work, mainly at first due to a moral dilemma. I had a couple separate occasions where teammates were feeling a little salty and throwing the word 'retarded' around to express their dissatisfaction with this or that. I was able to deal with it pretty optimally, and it has stopped (at least when I'm around.) I couldn't let that go by unchallenged and so that outted me.
I don't have any formal accommodations, I have requested some in the past and basically was answered with 'figure it out yourself'.
I am slowly moving toward the 'IDGAF what others think of me' attitude that I really want.. its a process.