It's not a way to treat anybody, even if they are a child. It's my opinion that treating people in an authoritarian way is the problem, not treating an adult that way ("like a child") instead of reserving the behavior for children!
It is dysfunctional but not unusual.
Figure out what you don't like & don't wish to tolerate, and start taking action. The behavior is happening for a reason. Showing understanding for that reason (just recognizing that there IS one!) is more helpful than condemning him, but you can also be clear about your personal limits.
If this isn't the way you want to interact whenever there's a conflict, then decide that for yourself & let him know. Tell him that it reliably happens (good intentions or not), that you understand it's happening for a reason (because he doesn't know a better way to handle his feelings when he's overwhelmed), but that it's not okay with you & you want to seek help to change.
at 11:02 AM on Nov. 1, 2013