Final answer:
Borderline personality disorder may be caused by a combination of genetic predispositions and environmental factors such as childhood experiences and family dynamics, with evidence suggesting a complex interplay of nature and nurture.
Step-by-step explanation:
One possible cause of borderline personality disorder (BPD) is a combination of genetic and environmental factors. Studies like those by Livesley (2008) and Joyce et al. (2003) suggest that vulnerabilities to BPD may be inherited and that temperament, along with childhood experiences, may play critical roles in the development of this disorder. Specifically, a genetically-informed model indicates that certain inherited traits may predispose an individual to BPD. Additionally, White et al. (2003) highlight family dynamics and potential dysfunction as influential in the manifestation of BPD.
Gunderson and colleagues emphasize that psychopathology and childhood environment are significant risk factors for BPD. It is also worth noting that there is a gender aspect to the diagnosis, with institutionalized sexism potentially playing a role in the higher diagnosis rates among women as pointed out by Becker. Research underscores that personality disorders like BPD arise from a complex interplay of nature and nurture, not attributable solely to substance use or medical conditions, as suggested by the available literature on mental health disorders.