Adolescence is a period with a specific risk to develop addictive behaviours. During this key period, addictions can be at the root of very damaging consequences, both on the health and social sides, which is nowadays a public health issue. Paradoxically, teenagers are often not requesting for aid and access aid with difficulty. So, first aid operators play a central role in teenagers' care, since they can detect precociously at-risk teenagers and orientate them to specialized care if necessary.