Abstract

We propose to present the clinical case of a woman diagnosed with Borderline Personality Disorder. The descriptive and comprehensive analysis of his biography and the psychotherapeutic relationship is carried out against the background of existential psychoanalysis and the progressive-regressive method formulated by Jean-Paul Sartre. The need for the psychotherapist to have a reflective and critical awareness of how the relationship with the client is established is the fundamental point, considering that it is a dialectical relationship and being under the same aegis of the ambivalence reported by the philosopher to explain how human reality is, in phenomenological-hermeneutic terms, constructed. The detailing of the case promotes reflections, understanding, in practice, the existential and phenomenological project of being. Finally, the study leads us to reflect that the procedures with these psychopathological cases require much more than the professional role of a psychotherapist ordinarily fulfills, because it is only when one manages to be aware of their experience in the relationship, that one can hermeneutically situate how the client apprehends herself originally and existentially.