There is a broad consensus that the core of psychopathology implicated in personality disorders (PDs) consists of dysfunctions related to the self and chronic and inflexible interpersonal patterns. The design of treatments for PDs requires a high degree of complexity, the use of different interventions and special attention to the therapeutic alliance. Interpersonal-cognitive therapy (ICT) is a treatment option to consider because of specific characteristics consistent with some of the dysfunctional patterns involved in PDs. Therefore, the objective of this exhaustive analysis of two cases is to confirm the efficacy of ICT. The results warrant the efficacy of ICT in achieving certain symptomatic changes, fundamental for the first sessions....