Abstract
Persistent problems in emotional regulation and interpersonal relationships in borderline patients can be understood as developing from difficulties in early dyadic regulation with primary caregivers. Early attachment patterns are a relevant causal factor in the development of Borderline Personality Disorder (BPD). Links between attachment issues, early history of neglect, and traumatic experiences, and symptoms observed in patients with BPD as per the DSM-5 classification (American Psychiatric Association: Diagnostic and statistical manual of mental disorders: DSM-5 (Fifth ed.). Washington, D.C; (2013)) are described in this article, while delineating possible pathways from attachment disruptions to the specific symptomatology of these patients. The theory of structural dissociation of the personality (TSDP) provides an essential framework for understanding the processes that may lead from insecure early attachment to the development and maintenance of BPD symptoms. Dyadic parent-child interactions and subsequent modulation of emotion in the child and future adult are considered closely related, but other factors in the development of BPD, such as genetic predisposition and traumatic experiences, should also be considered in conceptualizing and organizing clinical approaches based on a view of BPD as a heterogeneous disorder.