IMO, you don't need to tell them at the interview unless you know that the BP will directly effect your ability to perform your job and that you will need special considerations as outlined in the Americans with Disabilities Act.

Back in Aug, I forgot how to cope with life and ended up in the hospital for a week. Since I had no time off I had to file for FMLA. Before that I had told some of the people I work with including my boss and H R, but not really the extent to how much it affected my life. After the week in the hospital I went back to work for a week and then freaked out again, and then went out on disability for 7 weeks while I attended an out-patient program. When I went back to work after that I told my boss what had exactly happened, what I needed to change and how I could more effectively do my job.

Since I've been back things have gotten better, even though it took people like 3 months to start talking to me again. -_- now I probably tell my boss too much, like yesterday when I told my boss "the dr changed my meds so if I start acting weird that's why and if I start to have a seizure shove the benedryl I have on my desk down my throat". (Changed anti-psychotics, and one time had a seizure)