Do Mothers with Borderline Cause Borderline in Their Children?

This video answers the question: Can a mother with borderline personality disorder cause borderline personality disorder to manifest in a child. What this question is really asking is: Do we see such a thing as a transgenerational transmission of borderline personality disorder?
We see that there's a genetic contribution that we need to understand before getting to the environmental contribution. We know that the heritability is about 40 – 60%, so around half on average so. That's a lot of variance that's explained and of course we really can't do anything about the genetic side, we can only really focus on the environmental side in terms of treatment.
Some basic information about BPD: Borderline personality disorder is a cluster B personality disorder, so it's in the same cluster as antisocial, narcissistic, and histrionic personality disorders. The prevalence of borderline personality disorder in the general population is about 1% and there are a lot of studies with a lot of different prevalence figures, but overall it seems like 1% is reasonable in terms of a guess. In terms of gender prevalence, here we're not really sure. There are research studies that indicate that the prevalence is about equal between the genders, so roughly the same number of men are affected as women, but most studies indicate that more females would have borderline personality disorder. In the Diagnostic and Statistical Manual (DSM), we see nine symptom criteria for borderline personality disorder and five have to be met for a diagnosis. The symptom criteria include frantic efforts to avoid abandonment, unstable relationships, identity disturbance, impulsivity in two areas that are potentially self-damaging, suicidal behavior, affective instability, chronic feelings of emptiness, inappropriate or intense anger or difficulty controlling anger, and paranoid ideation or dissociation. It's estimated that about 10% of individuals with borderline personality disorder will complete suicide and about 60 to 80% of individuals with this disorder will have non-suicidal self-injury at some point in their life.
Stepp, S. D., Whalen, D. J., Pilkonis, P. A., Hipwell, A. E., & Levine, M. D. (2011). Children of mothers with borderline personality disorder: identifying parenting behaviors as potential targets for intervention. Personality disorders, 3(1), 76-91.