Borderline Personality and Secondary Psychopathy, not proven, but as conflicting studies indicate, it is not a reality for all with BPD but may well be for the most severe cases of BPD. Secondary Psychopathy in BPD does not mean a percentage of those with severe BPD are Psychopaths. It is also not (as A.P.A.) claims only in women with Severe BPD but Men with Severe BPD also. In my 31 years of working with clients approx 10% to 15% have experienced a person (Ex) in their life with Severe BPD and who likely had secondary psychopathy. What is it and what does it mean in those with BPD who have it. Secondary Psychopathy is not a Borderline splitting and becoming a "Psychopath" at all.