I've just started a new job after two years off dealing with this shit. I haven't told them. It's a casual position that's usually three shifts a week and as most appointments are made a month or more in advance I just tell them not to roster me on those days.
If you go for something that requires a medical you'll probably have to ''fess up, but I deliberately avoided those sorts of jobs for now. Most government positions want you to sign off that you don't have a condition that is going to be aggravated by doing your duties, which is not the same as admitting you have or had an underlying medical issue. Good luck, that first pay cheque is a great feeling. Mxx