BPD is usually diagnosed using American Psychiatric Association Diagnostic and statistical manual of mental disorders 4th edition – text revision (DSM-IV-TR) criteria (see table below).
World Health Organization International statistical classification of diseases and related health problems 10th Revision (ICD-10) also includes diagnostic criteria for unstable personality disorder, borderline type (see table below).
A pervasive pattern of instability of interpersonal relationships, self-image and affects, and marked
impulsivity beginning by early adulthood and present in a variety of contexts, as indicated by five
(or more) or the following (in addition to general diagnostic criteria for a personality disorder):
1. Frantic efforts to avoid real or imagined abandonment
2. A pattern of unstable and intense interpersonal relationships characterised by alternating
between extremes of idealisation and devaluation
3. Identity disturbance: markedly and persistently unstable self-image or sense of self
4. Impulsivity in at least two areas that are potentially self-damaging (e.g. spending, sex, substance
abuse, reckless driving, binge eating)
5. Recurrent suicidal behaviour, gestures, or threats, or self-mutilating behaviour
6. Affective instability due to a marked reactivity of mood (e.g. intense episodic dysphoria, irritability
or anxiety usually lasting a few hours and only rarely more than a few days)
7. Chronic feelings of emptiness
8. Inappropriate, intense anger or difficulty controlling anger (e.g. frequent displays of temper,
constant anger, recurrent physical fights)
9. Transient, stress-related paranoid ideation or severe dissociative symptoms
Emotionally unstable personality disorder is characterised by:
• a definite tendency to act impulsively and without consideration of the consequence
• unpredictable and capricious mood
• liability to outbursts of emotion and an incapacity to control the behavioural explosions
• tendency to quarrelsome behaviour and to conflicts with others, especially when impulsive acts are thwarted or censored.
Two types may be distinguished: impulsive type and borderline type.
The borderline type is characterised by disturbances in self-image, aims, and internal preferences, by chronic feelings of emptiness, by intense and unstable interpersonal relationships, and by a tendency to self-destructive behaviour, including suicidal gestures and suicide attempts