I’m sorry you didn’t get your raise. If you’re not ready for management now it does not mean you won’t be ready for it in the future. I always thought a raise reflected your current level of production, etc. not what kind of employee you will be in the future of which it sounds based on your history you would be a valued future employee. I don’t think you should feel less valued because you don’t want to go into management whether or not you are bipolar. Personally, I don’t like his attitude and I don’t he is being fair so not sure he would warm up to you if you told him you were bipolar. Is there a pay scale for your position? If so, are you already making the most you can make per the pay scale? Maybe you could give it a couple weeks and talk to him again, after you calm down (not to assume you are upset), and give him a list of reasons he might want to consider giving you a raise. Maybe you can make a lateral move to another department in the company where you can do something similar that will pay more.

Good for you to manage your stress so you can continue to work when many people cannot. You seem like a rationale level headed person to me just because you are making good decisions about your health. I would give you a raise because I value my productive co-workers, many of them who are more productive then management