(a) callous unconcern for the feelings of others;
(b) gross and persistent attitude of irresponsibility and disregard for social norms, rules and obligations;
(c) incapacity to maintain enduring relationships, though having no difficulty in establishing them;
(d) very low tolerance to frustration and a low threshold for discharge of aggression, including violence;
(e) incapacity to experience guilt and to profit from experience, particularly punishment;
(f) marked proneness to blame others, or to offer plausible rationalizations, for the behaviour that has brought the patient into conflict with society.

There may also be persistent irritability as an associated feature. Conduct disorder during childhood and adolescence, though not invariably present, may further support the diagnosis.

Includes:
* amoral, antisocial, asocial, psychopathic, and sociopathic personality (disorder)

Excludes:
* conduct disorders
* emotionally unstable personality disorder

Conditions not directly attributable to gross brain damage or disease, or to another psychiatric disorder, meeting the following criteria:

(a) markedly dysharmonious attitudes and behaviour, involving usually several areas of functioning, e.g. affectivity, arousal, impulse control, ways of perceiving and thinking, and style of relating to others;
(b) the abnormal behaviour pattern is enduring, of long standing, and not limited to episodes of mental illness;
(c) the abnormal behaviour pattern is pervasive and clearly maladaptive to a broad range of personal and social situations;
(d) the above manifestations always appear during childhood or adolescence and continue into adulthood;
(e) the disorder leads to considerable personal distress but this may only become apparent late in its course;
(f) the disorder is usually, but not invariably, associated with significant problems in occupational and social performance.

For different cultures it may be necessary to develop specific sets of criteria with regard to social norms, rules and obligations. For diagnosing most of the subtypes listed below, clear evidence is usually required of the presence of at least three of the traits or behaviours given in the clinical description.