Borderline personality disorder and depressive disorder.

Depressive symptoms are present in the majority of people with BPD. To address the difficulty differentiating clinically distinct MDD from depressive symptoms that are integral to BPD psychopathology, it is suggested that depressive symptoms arising from a primary diagnosis of BPD (i) may exhibit transience and be stress reactive, (ii) lack a robust clinical response to antidepressant medication and/or electroconvulsive treatment and (iii) are responsive to BPD-appropriate psychotherapy.