Borderline Personality DisorderStephanie McPeekDepartment of Social Work and Sociology, Concord UniversitySOWK 600: PsychopathologyProfessor Newcomb-RichmondJuly 27, 2022Borderline Personality DisorderThe Diagnostics and Statistic Manual of Mental Disorders, 5th edition, lists ten personality disorders divided into three categories: cluster A, cluster B, and cluster C (Chapman, 2022). The personality disorder that is being focused on in this paper is a borderline personality disorder, which is a cluster B disorder. The DSM-5 states that borderline personality disorder (BPD) is a pervasive pattern of instability of interpersonal relationships, self-image, and affects, marked impulsivity beginning in early adulthood (APA 2013).Etiology of Borderline Personality DisorderThe etiology of borderline personality disorder has multiple factors. The biosocial model views borderline personality disorder (BPD) as a disorder of maladaptive emotional regulation produced in biologically susceptible individuals due to an invalidating developmental environment (Crowell, 2009). Environmental factors such as childhood maltreatment (sexual, physical, or neglect), poor maternal separation, poor maternal attachment, inappropriate family boundaries, parental substance abuse, and serious parental psychopathology were found in up to 70% of individuals diagnosed with BPD (Chapman, 2022). Studies have shown that there is a