I wish my experience with disclosure had been as positive. Initially my supervisors did try to work with me, but when push came to shove the Americans with Disabilities Act didn't protect me when they decided they couldn't make the 'reasonable accommodations' I needed to stay in my job.
My current bosses know nothing about my bipolar, and God willing they never will. I too hold a very responsible position, and I don't want anyone questioning my judgment every time I turn around because the existence of mental illness colors people's perspective of everything one does. That stigma is so ingrained, even among us so-called healthcare professionals, that I'd just rather not deal with it if I can help it.
Of course, I know my odds of "getting away with it" over the long term aren't good, simply because I don't seem to be able to stay on an even keel for more than a few months. Your odds may not be all that great either simply because you work with people who sniff out mental illness for a living, but in your place I would think very long and very hard before sharing your diagnosis with anyone. Just my two pence worth.
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DX: Bipolar 1
Anxiety
Tardive dyskinesia
Mild cognitive impairment
RX: Celexa 20 mg
Gabapentin 1200 mg
Geodon 40 mg AM, 60 mg PM
Klonopin 0.5 mg PRN
Lamictal 500 mg
Levothyroxine 125 mcg (rx'd for depression)
Trazodone 150 mg
Zyprexa 7.5 mg
Please come visit me @ http://bpnurse.com