So, you just told your child they can't do something. Maybe you said no to a concert, a movie date with a young driver, or a gathering with no adult supervision. What happens next? Does your child storm out of the room fuming under their breath? Sulk for an entire evening? Slam his door on the way into his room?
All of these possibilities are disruptive and unsettling to a parent. However, they are totally normal reactions when teenagers don't get their way. One of the mistakes parents make is to call their teenager on how they "react" to being told no. Teenagers, like all of us, do not like to be denied something they want. Most are not mature or self-aware enough to thank their parent for making the tough decisions.
If you have a teenager that defies you, then that is something to be very concerned about. But, if you simply have a teenager who feels angry at you, and as a result may say a throw-away comment, or spend an evening showing just how much they disapprove of your decision, then you have a teen who is acting well within the parameters of normal behavior.