Due to the high positive correlation between bisexuality and Borderline Personality Disorder, we are attempting to get a better understanding of the impairments listed in the DSM 5. 

DSM 5, BPD – Pathological personality traits in negative affectivity – Emotional liability –  Unstable emotional experiences and frequent mood changes.

Intense and rapid changes in mood states is a major feature of borderline personality disorder (BPD).  When looking at the neurology of this trait, a study done by Herperts and others (2001)  reveals some interesting patterns. To read more:

BPD – Changing the Way I think