Group therapy is a fundamental therapeutic activity, it helps patients deal with their symptoms and allows them to put into practice the relationship with others in a controlled environment; it reduces suicide risk, impulsivity and promotes mentalization. Furthermore, inclusion in the group teaches individuals interpersonal relationship skills and provides them with a social support network that many of them lack. Group psychotherapy has a frequency of one hour and a half weekly session, led by a psychologist specialized in PD.

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In the group there are 4 phases: the initial or commitment phase, the differentiation phase, the interpersonal work phase and the parting phase.