In this work the author faces the classic concept of Negative Therapeutic Reaction that it is considered valid and recognizable even in today’s new pathologies, such as a form of repetition of the trauma in which the resistance aspect emerges from a negative narcissism that has been structured in time. Its presence in the therapeutic process indicates the presence of a psychotic nucleus. The author synthesizes the evolutionary path of the concept in Freud and compares it to the contributions of Ferenczi on the real trauma. RTN, a "diabolical" resistance to care as an expression of the death instinct. Some clinical flashes will be reported in which resistances, due to their persistent tenacity, appear as "diabolical oppositions". The first two flashes refer to deep identification with aspects of the feminine, the third to "numbness in the session".
Keywords: Negative therapeutic reaction, impasse, diabolic resistance, real trauma, death drive, transference-countertransference, torpor in the session, interminable analysis.