I normally avoid commenting on peoples personal lives, but I feel strongly here that if you leave with your son you are ABSOLUTELY not in the wrong. I can't imagine what your BF is going through, but this sort of behavior is 100% unacceptable regardless of health condition. And the impression I get is that he acted like this before he was sick. Personally I would have left a long time ago and never looked back. You have to think of your best interest, and your sons best interest. Verbal abuse is just as, if not more, hurtful in the long term than physical abuse.

My point $0.02 is that your boyfriend need some ****ing sense knocked into him. I'm getting angry just thinking about it.

All that being said, I wish the best for you and your son and hope whatever decision you make keeps you mentally and physically safe and happy! Good luck and much internet love!!!