Just throwing my hat in the ring here and advising you not to disclose. Laws only go so far, and depending on the size of your career circle, news could leak to other potential employers. Blacklisting still occurs. And as purpledaisy said, if they want to fire you, they'll find a reason. Discrimination is often difficult to prove.

I'm actually having a similar struggle. I will be starting full time work soon after a stint in the psych ward, and I'm just praying that I figure out the right combination of meds before then so as to avoid any spazzing during work hours. Good luck to you.