[Paradoxes in adolescence: break and continuity]

The psychopathological studies on adolescence underline the paradoxical behaviours during this period of life. After the analysis of its concept we show in which way the paradox helps to maintain the continuity of psychological life during the crisis. Thus impossible choices which are part of the contradiction in adolescents be avoided. It will be necessary to provoke the emergence of the paradox from the contradictions linked with hospitalization through on hospitalization to make the most of the letter in the therapeutic process.