Abstract
Drug use in adolescence. This article provides an overview of the most important variables related to the initiation and drug consumption among teenagers. We distinguish the individual and the social variables. We find two levels in the social factor: the macrosocial which assembles social influences to occur a higher level, and the microsocial who takes its references from his social environment near by. We expound that the use of drugs is in function to many factors. The main question is how to interact these factors, as far as to influence a variable on the others and how to produce the different combinations of variables implicated in the etiology of this conduct and who could bring all unchainment to it, this is the most thorny problem we find ourselves in.