Sorry you are having a tough time Innerzone. Is the graveyard your structured shift or are you switching back and forth between days and nights. I do work shift work and it's not ideal, but I have been able to do it. I really enjoy my job, and I wasn't willing to give it up (I had my the job prior to my diagnosis).

If you like your job requesting a more suitable shift is definitely an option. If you don't like your job perhaps this just forces you to start looking for a job that you would enjoy more.

I hope you start feeling better soon.