The cases of two borderline patients are presented, dexamethasone suppression test (DST) positive and refractory to many therapeutic interventions and treated successfully with high doses of amitriptyline (225 and 200 mg/day, respectively). During the therapeutic intervention, the psychopathological condition of the patients was evaluated using Hamilton's rating scale for depression and a constructed scale based on items 11, 12 and 13 (dysphoria, anger, sense of emptiness, boredom, anhedonia) of the diagnostic interview for borderline patients.