This paper examines the French psychoanalytic concept of pubertal psychosis as a framework for understanding psychotic phenomena emerging during adolescence. Drawing initially on the work of Moses and Eglé Laufer on developmental breakdown, the French model conceptualized adolescence as a dynamic process of psychic reorganization in which pubertal transformation, subjectivation and the reorganization of object relations may temporarily destabilize psychic functioning. The author outlines the French metapsychology of the adolescent process, including the Pubertaire, Adolescens, latency function, and processes of binding and unbinding, before examining the continuum from ordinary adolescent paranoia and folie pubertaire to pubertal psychosis. A clinical vignette illustrates how recurrent acute psychotic symptoms may be understood in relation to unconscious family dynamics and difficulties in subjectivation and differentiation. The paper argues that the concept of pubertal psychosis is best understood as a metapsychological and clinical formulation rather than a distinct diagnostic entity. In the context of expanding early-detection psychiatric initiatives, this psychoanalytic model offers a complementary approach for comprehending heterogenous pathological functioning that preserves diagnostic caution and prognostic openness, while fully accounting for the therapeutic stakes at play.