The advancement of puberty and thus testosterone in a boy raises a certain amount of "self protective" instinct which can be seen as aggression or hostility. The conflict is made worse by being young and inexperienced in social parental relations. Stay cool. a boy will hug his parent and say "I love you" and the next minute slam the bedroom door and disappear. It's all normal. Just keep listening and stand up for your expectations. Expect conflict but manage it not ignore it.
Wayne Yankus, MD, FAAP
expert panelist: pediatrics