I have let all of my employers know in the past but only when I felt like it was affecting my performance. I was hospitalized 2 years ago and so I obviously had to disclose since I was going to miss an extensive amount of time. This new job I just got I never said anything until last week. My symptoms were out of control last week and I was frustrated with my paper work and so I told my supervisor about the diagnosis and the fact that I was struggling but that I wasn't jeopardizing my patients and I just wanted her to know in case things got worse. It's not something you're obligated to talk about in your interview. You should bring it up if and when you feel like your job performance is being affected. For me I was able to see patients but focusing long enough to complete the paperwork was difficult. She was very willing to work with me and all that so it worked out for me. I figure if an employer can't be supportive when I'm not even asking for time off and I do my job well every day then it's probably not someone I want to work for anyway. Just my thoughts on this!!