borderline personality disorder

n. A persistent and pervasive pattern of personal adjustment characterized by instability in interpersonal relationships, self-image, and affect. Persons with this disorder usually spend a great deal of time brooding over real and imagined wrongs, being fearful of desertion, feeling empty, and thinking about suicide. They also tend to act impulsively, have inappropriate outbursts of anger, and show transient paranoia and dissociative thinking.