Teenagers are close to their peak of physical strength and intellectual capacity, but the part of the brain responsible for impulse control is among the last to mature and the circuitry that controls the intensity of emotional responses is overactive in the teen brain.
Teens need meaning in their lives. They search for purpose, value, and fulfillment. Existing day-to-day and week-to-week isn't enough; they hunger for more than daily routines and obligations. When they find nothing to fill those voids, they're sometimes at risk for exploring treacherous ground with lost people.
It's important for parents to understand that the allergy isn't really personal. It's not about you. It's simply part of parenting a teen.