When one's personality traits and/or behavior become rigid and consistently deviate from the expectations of one's society, consistently blunt one's social life and ability to function appropriately in society. Usually manifested before the age of 15 and persisting into adulthood.
Often the result of abusive or otherwise unstable home environments in childhood, as well as from heavy stress, if not with some influence of genetic predisposition.

The three main clusters of personality disorders are:
A (odd)
*paranoid personality disorder (irrationally suspicious and mistrustful)
*schizoid personality disorder (uninterested in socializing or pleasure)
*schizotypal personality disorder (odd behavior/odd thoughts)
B (dramatic)
*antisocial personality disorder (di...

When one's personality traits and/or behavior become rigid and consistently deviate from the expectations of one's society, consistently blunt one's social life and ability to function appropriately in society. Usually manifested before the age of 15 and persisting into adulthood.
Often the result of abusive or otherwise unstable home environments in childhood, as well as from heavy stress, although genetic predisposition may also play a part.

The three main clusters of personality disorders are:
A (odd types)
*paranoid personality disorder (irrationally suspicious and mistrustful)
*schizoid personality disorder (uninterested in socializing or pleasure)
*schizotypal personality disorder (odd behavior/odd thoughts)
B (dramatic types)
*antisocial personality disorder

A person that is suffering from Wackass Personality Disorder has two or more of the following symptoms present for at least a week:
1)Dresses in a matter were none of his or her articles of clothing matches.
2)Listens to music based on how cool it is.
3)Assumed to be homosexual, mainly because of the resemblance of his or her personality attributes to that of a homosexual.
4)Has an admiration for only the things that he or she likes. Everything else sucks.
5)Never crosses his mind that he or she is actually not cool at all and therefore the disorder persists until help is administered.
6)Overwhelmingly self-centered. Other people are perceived to be something less. This could also be a sign of a sociopath.
7)Shows signs of inauthenticity and/or blatant exaggerations. Not original at all. This is usually the first sign of the disorder.
8)Excessively materialistic to the point were items are bought solely for the prestige.
9)Lies about various things in order to hide from the public his or her condition.

Wackass Personality Disorder is a serious disorder of the personality that needs to be treated immediately upon diagnosis. Left untreated, the person suffering from it can have dire consequences leading to a more severe case of Wackass Antisocial Personality Disorder.

A short version of the definition of BPD:

In general, people with BPD feel worthless, empty, moody, needy, depressed, and have difficulty managing their emotions. They have trouble with boundaries--both their own and respecting others. They are looking for that all-loving "other" who will provide the unconditional love they cannot give themselves.

BPs often act inconsistently, act impulsively in ways they later regret, see other as either all good or all bad, and base their beliefs on feelings instead of facts. Borderlines are people in pain.

BPs commonly manage their intense pain in two ways: they act in or act out. BPs who act in may mutilate themselves, make suicide attempts, express self-hate, or seek outpatient or inpatient therapy.

Other BPs manage their pain by trying to foist it on others. They blame loved ones for all their problems, criticize, make unfair accusations, act emotionally or physically abusive, put others in no-won situations, and use emotional blackmail to get the love they need.

A longer, clinical definition of BPD used by clinicians:

The DSM-IV diagnostic criteria for borderline personality disorder reads as follows:

A pervasive pattern of instability of interpersonal relationships, self-image, and affects moods, and marked impulsivity beginni...

Narcissistic personality disorder is a pervasive pattern of grandiose thoughts and/or behavior, need for admiration, and lack of empathy, beginning by early adulthood and present in a variety of contexts, as indicated by five (or more) of the following:

1. Has a grandiose sense of self-importance (e.g., exaggerates achievements and talents while minimizing failures, expects to be recognized as superior without earning that reverence).
2. Is preoccupied with fantasies of unlimited success, power, brilliance, beauty, or ideal love; often becomes a life goal.
3. Believes that he or she is "special" and unique and can only be understood by, or should associate with, other special or high-status people (or institutions)
4. Requires excessive admiration, regardless of whether they earned the admiration.
5. Has a sense of entitlement, unreasonable expectations of especially favorable treatment or automatic compliance from others.
6.

Often confused with "asocial", which is very different; "asocial" means one who seeks to avoid society, somebody who refuses to or cannot socialize, like someone on the autism spectrum.

Antisocial means "against society" or "anti-society"; hostile and antagonistic toward society. This includes behavior that disrespects and violates the rights and feelings of others as well as the order and principles of society, behavior that includes theft, bullying, rape, and general criminal behavior.

An antisocial personality knows the difference between right and wrong but does not care; as long as they get what they want, they don't care who they have to walk over.

A person with antisocial personality disorder. Probably the most widely recognized personality disorder. A sociopath is often well liked because of their charm and high charisma, but they do not usually care about other people. They think mainly of themselves and often blame others for the things that they do. They have a complete disregard for rules and lie constantly. They seldom feel guilt or learn from punishments. Though some sociopaths have become murders, most reveal their sociopathy through less deadly and sensational means.