Symptom 2: Change in social behavior
Patients of borderline personality disorder can easily shift personalities between being introverts and extroverts. Depending on their mood, they can be the loudest person in the room or they can even disappear in a matchbox room of a handful of people. These individuals also tend to move towards the opposite of what they were behaving like recently, and on the next social gathering, they can like a completely different person.
