This article is from the Psychology FAQ, by Rolf Marvin Bøe Lindgren roffe@tag.uio.no with numerous contributions by others.
There does not seem to be any consensus regarding the cause and
treatment of Borderline Personality Disorder. The outline presented
below is not to be considered canonical.
Some major identifying characteristics of the borderline are
* Intense, unstable personal relationships
* Repetitive self-destructive behaviors
* Chronic fears of abandonment
* Chronic feelings of intense anger, loneliness, and emptyness
 
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