I suffered through without telling my employer anything unless I told a coworker how I was feeling. She went to my Dean, he went to HR and they wrote a letter to my psychiatrist. Although they couldn't access my medical records, they had information from health insurance of who I was seeing. I immediately when on a leave of absence and when I returned we set up an accommodations list (which was good) and I was required to sign a statement that I would not disclose my disability or symptoms to any faculty, staff, or students in order to return to work (bad). Requiring me to sign that statement was unacceptable and stigmatizing but I did it because I wanted to return to work. I worked half-time for one semester and then returned to full time and they broke EVERY accommodations they agreed to. I lasted about 3 weeks.

Disclosing to my bosses was not my choice but happened anyway. If you think it can help you, then disclose. Be careful who you disclose to, even friends, if you are not willing to have your employer know.