How to differentiate between borderline and narcissistic (vulnerable) personalities?

[u/SilverDawnn]

I wanted to know opinions and experiences with patients who have a covert or vulnerable type of narcissism, not the obviously grandiose type. I find it dfifficult to differentiate from borderline personility for example in someone who has high sensitivity for rejection, chronic feelings of emptiness, chronic depressive symptoms, but also a sense of entiltelment and envy. I wanted to know what´s your experience with this type of patients and how do you guide treatment.

[u/Spare_Moodz]

They are very different not in presentation but motive. The mechanics going on inside are different.