This paper presents the results of a research about adolescents having perpetrated sexual assault, met in the precinct of judiciary expertise. These subjects had been instable children, agitated or yet hyperactive. The author tries then to explain how infantile hyperactivity, the difficulty to mentally deal with drive excitations, can be a risk factor of sexual assault in adolescence. The notion of phallic narcissism allows illuminating the identificatory deadlocks and the trouble to reconcile with the mutuality of desires.
Adolescence; sexual assault; psychoanalytical clinic and psychopathology; hyperactivity; phallic narcissism