Systemic thinking has caused a revolution in clinical practice, through the paradigm shift (Kuhn, 2000), from the individual and internal medicine, in relationships and broader social networks. The application of systemic belief in the working environment of Adolescent Psychiatric Inpatient Care Unit (AICU) provided the opportunity for the fullest consideration of the therapeutic reality , offering interesting cases and reflections on the interaction between young people and the health care team members. Alongside, the systemic practice offered the tools and techniques for the theoretical application in everyday clinical practice.