Borderline personality disorder.......

Borderline personality disorder (BPD) is a psychiatric diagnosis in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV Personality Disorders 301.83that describes a prolonged disturbance of personality function characterized by depth and variability of moods. The disorder typically involves unusual levels of instability in mood; "black and white" thinking, or "splitting"; chaotic and unstable interpersonal relationships, self-image, identity, and behavior; as well as a disturbance in the individual's sense of self. In extreme cases, this disturbance in the sense of self can lead to periods of dissociation. These disturbances can have a pervasive negative impact on many or all of the psychosocial facets of life. This includes difficulties maintaining relationships in work, home, and social settings. Attempted suicide and completed suicide are possible outcomes, especially without proper care and effective therapy. Onset of symptoms typically occurs during adolescence or young adulthood, and may persist for several years, but the majority lessen in severity over time or recover. The mainstay of treatment is various forms of psychotherapy, although medication and other approaches may also improve symptoms.

As with other mental disorders, the causes of BPD are complex and unknown. One finding is a history of childhood trauma (possibly child sexual abuse), although researchers have suggested diverse possible causes, such as a genetic predisposition, neurobiological factors, environmental factors or brain abnormalities. The prevalence of BPD in the United States has been calculated as 1 to 3 percent of the adult population, with approximately 75% of those diagnosed being female, 25% male. It has been found to account for 20 percent of psychiatric hospitalizations. Common comorbid (co-occurring) conditions are other mental disorders such as substance abuse, depression and other mood disorders, and other personality disorders. BPD is one of four diagnoses classified as "cluster B" ("dramatic-erratic") personality disorders typified by disturbances in impulse control and emotional dysregulation, the others being narcissistic, histrionic, and antisocial personality disorders.

The term borderline, although it was used in this context as early as the 17th century, was employed by Adolph Stern in 1938 to describe a condition as being on the borderline between neurosis and psychosis. Because the term no longer reflects current thinking, there is an ongoing debate concerning whether this disorder should be renamed. There is related concern that the diagnosis stigmatizes people, usually women, and supports pejorative and discriminatory practices.