What is boarderline personality disorder?

Borderline: Personality disorders are enduring, inflexible patterns of inner experience & behavior causing significant distress in relationships, work, & other important areas. "borderline" applies to a person with unstable sense of identity; extreme fear of being alone; unstable relationships; impulsivity; affective instability; extreme anger; chronic suicidality or self-mutilation; mini-psychotic times.

A quick answer: Google the following: "borderline personality disorder" and dsm. You'll find all the criteria psychiatrist use to make that diagnosis. You'll also get a feel for whether or not you fit.

Borderline: Intense fear of abandonment, being manipulative, impulsivity, a tendency to think of people and things in all good or all bad terms, self mutilating behaviors, drug and alcohol abuse, sexual impulsivity, a profoundly disturb sense of self, and extreme emotional volatility.