Given that we live in a society marked by irregularities, the drug is to reach everyone, especially teenagers, it is impossible to remain impassive to their problems. Once the consumption of harmful substances becomes an integral factor of subject behavior, alterations in personality may occur. Drug use began at an early age may become a permanent feature of behavior.

The teenager feels the need to be recognized, supported, stimulated and integrated by those of an age to him, the group representing a possible solution to secure and make manifest their desires and aspirations. Our study confirms that all subjects of drug use (marijuana) present emphasis of the personality traits, particularly increased emotional instability with sudden transitions from one state to another. Drug users present in most cases some symptoms of depression. These events can be inscribed under the coordinates of anxiety, lack of interest, pessimism, sleep disorders and social inadaptation.

Understanding, evaluation and intervention with corrective and welfare measures requires the correct assessment of the reasons that leads the adolescent to a drug and identifying the precipitating and environmental factors that trigger, facilitate and perpetuate the behaviors studied.