Many times we observe indifferent people around us. Observing their bizarre behaviour makes us think that why are they acting in a certain way? What makes their thought process dissimilar from other people around them? Is it a disorder? A personality disorder is a type of mental disarray in which you have a firm, rigid and unhealthy pattern of thinking, functioning and behaving.


Basic 10 types of personality disorders are below:

  • Paranoid personality disorder
  • Schizoid personality disorder
  • Schizotypal personality disorder
  • Antisocial personality disorder (ASPD)
  • Borderline personality disorder (BPD)
  • Histrionic personality disorder
  • Narcissistic personality disorder
  • Avoidant(or anxious) personality disorder
  • Dependent personality disorder
  • Obsessive compulsive personality disorder (OCDP)

The types are grouped into three categories:


  • Suspicious (Cluster A)–, schizotypal and antisocial, paranoid, schizoid
  • Emotional and impulsive(Cluster B) –Narcissistic, borderline, histrionic
  • Anxious (Cluster C)– Obsessive compulsive, avoidant and dependent.


1. Paranoid Personality Disorder


Paranoid personality disorder
Paranoid personality disorder
  • They have pervasive disbelieve, doubt and mistrust of others and their motives.
  • Create a groundless belief that others are trying to harm or cheat them.
  • Unjustified suspicion of the trustworthiness or credibility of others
  • Unjustified, persistent suspicion that spouse or sexual partner is disloyal.
  • They have tendency to observe others closely, looking for signs of unfaithfulness or resentment.
  • These individuals find it hard to confide in people, even their friends.
  • They find it very hard to believe others, having a perception that they will use them or take an advantage of them.
  • Doubtfulness to confide in others due to unreasonable apprehension that others will use the information in opposition to them.
  • Perception of naive or innocent remarks or nonthreatening situations as personal abuse or attacks or to react by taking them as an offense.
  • They have fuming or aggressive reaction to supposed slights or insults.
  • They have an affinity to hold grudges.


2. Schizoid Personality Disorder

Schizoid personality disorder
Schizoid personality disorder
  • They have lack of interest in communal or personal relations, preferring to be unaccompanied or aloof.
  • They have inability to pick up even standard societal cues.
  • They carry appearance of being not interested or apathetic to others.
  • They are diminutive or no interest in having sex with another person.
  • They have Partial range of emotional expression
  • They have Inability to take delight in most activities or deeds.


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4. Schizotypal Personality Disorder

Schizotypal Personality Disorder
Schizotypal Personality Disorder
  • These individuals will have odd / strange dress sense, thinking, beliefs, speech or behaviour or mannerism.
  • They have peculiar perceptual experiences, such as hearing a voice, someone whispering their name.
  • They have flat emotions or inapt emotional responses.
  • Public anxiety and a lack of or uneasiness with close associations is commonly observed.
  • Inappropriate, Indifferent or mistrustful response to others.
  • They have “Paranormal thinking” — believing you can manipulate people and actions with your thoughts.
  • They have a belief that certain untailored incidents or actions have secreted messages meant only for them.
  • People suffering from this disorder find it extremely difficult to make close relationships .
  • They believe that they can read minds or that you have extraordinary powers such as a ‘sixth sense’.
  • They feel apprehensive and anxious with others who do not share these beliefs.
  • They undergo very anxious and suspicious in social situations.
  • They think and articulate themselves in ways that others find ‘strange’, using bizarre words or phrases.
  • They act in ways that others find eccentric and unconventional.

5. Antisocial Personality Disorder (ASPD)

Antisocial personality disorder (ASPD)
Antisocial personality disorder (ASPD)
  • They put themselves in hazardous or perilous situations, often without considering the results for themselves or for other people.
  • They behave treacherously and sometimes illegitimately.
  • People suffering from this disorder act in ways that are unpleasant for others.
  • They would be very easily bored and act on impulse – they may find it hard to hold down a job for long.
  • They would conduct themselves aggressively and get into fights easily.
  • They will do things – even though others may get hurt – to get what you want, putting their needs above others.
  • They tend to have a criminal record.
  • Aggressiveness and often violence in their behaviour is commonly observed.
  • Disregard for the safety of self or others.
  • There would have no sense of guilt if they have mistreated others.
  • They carry the belief that they are only the strongest survivor and that they must do whatever it takes to lead a successful life because if they would not grab opportunities, others will.
  • They would be persistent liars, would be stealing, using aliases, conning others.


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7. Borderline Personality Disorder (BPD)

Obsessive compulsive personality disorder (OCDP)
Borderline personality disorder (BPD)
  • They have impulsive and perilous activities, such as having unsafe sex, gambling or overdo eating.
  • They have wobbly or fragile self-image, unstable and intense relationships.
  • Mood swings, often as a reaction to interpersonal anxiety.
  • They also have suicidal behaviour or threats of self-harm.
  • Individual suffering from this disorder would have Intense fear of being alone or abandoned and also ongoing feelings of emptiness
  • They may have frequent, intense displays of anger, stress-related paranoia that comes and goes.
  • They feel very apprehensive about people abandoning you, and would do anything to prevent that happening.
  • They do not have a strong sense of who they are, and it can change depending on who they are with.
  • When very stressed, sometimes they might:
  • Feel obsessed or paranoid.
  • Have psychotic experiences, such as seeing or hearing things that other people don’t
  • Feel frozen or ‘checked out’ and do not remember things correctly after they have happened.


8. Histrionic Personality Disorder

Histrionic Personality Disorder
Histrionic Personality Disorder
  • People suffering from this disorder feel very uncomfortable if they are not the centre of attention.
  • They would feel much more at ease and peace as the ‘life and soul of the party’.
  • They feel the need to entertain people around them.
  • They would flirt or act provocatively to ensure that they remain the centre of attraction.
  • They get a status for being dramatic and soppy.
  • They will always be reliant on the approval of others.
  • They speak dramatically with strong opinions, but few evidences to back them up.
  • They would be easily influenced by others
  • They will have shallow and rapidly changing emotions.
  • Excessive distress for their physical appearance.
  • They tend to think relationships with others are closer than they really are.


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10. Narcissistic Personality Disorder

Narcissistic Personality Disorder
Narcissistic Personality Disorder
  • They carry belief that you are special and more significant than others.
  • They imagine about authority, achievements and attractiveness.
  • They fail to recognize others’ needs and feelings.
  • They would amplify their achievements or talents.
  • They have expectations of constant praise and admiration which comes with arrogance.
  • Unreasonable expectations of favors and returns, often taking benefits from others.
  • They have feelings of envy of others or certainty that others envy them.
  • They believe that there are special reasons that make them diverse from others, better or more deserving than others.
  • They tend to have fragile self-worth, so they rely on others to distinguish their value and their needs.
  • They will feel upset if others pay no attention to them and don’t give you what you feel you deserve
  • They begrudge other people’s successes and also put their own needs above other people.
  • They take advantage of other people.


11. Avoidant (or anxious) Personality Disorder

Avoidant or anxious Personality Disorder
Avoidant or anxious Personality Disorder
  • These people will refrain from work or a social activity because that means that they have to be with others.
  • They anticipate disapproval and criticism and are very thin-skinned to it.
  • They worry continuously about being ‘found out’ and abandoned.
  • They worry about being ridiculed or humiliated by others.
  • These people avoid relationships, friendships and closeness because they fear disapproval.
  • They feel lonely and secluded, and inferior to others
  • They are reluctant to try new activities in case you embarrass them.
  • Extreme shyness in social situations and personal relationships.


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13. Dependent Personality Disorder

Dependent Personality Disorder
Dependent Personality Disorder
  • Extreme reliance on others and feeling the need to be taken care of.
  • They have submissive or clingy behaviour toward others.
  • They have a fear of having to give self-care or fend for themselves if left alone.
  • They have difficulty disagreeing with others, fearing disapproval
  • They even carry acceptance of poor or offensive treatment, even when other options are accessible.
  • They feel urgency to start a new relationship when a close one has ended.
  • They feel needy, weak and unable to make decisions or tasks properly without help or support.
  • They allow others to presume liability for many areas of your life
  • They lack self-confidence, requiring too much advice and reassurance from others to make even small decisions
  • They have complexity in starting or doing projects on your own due to lack of self-assurance.


14. Obsessive compulsive personality disorder (OCPD)

Obsessive compulsive personality disorder (OCDP)
Obsessive compulsive personality disorder (OCDP)
  • They need to keep everything in order and under control.
  • They set unrealistically high principles for themselves and others.
  • They get anxious when they or others might make mistakes
  • They expect catastrophes if things aren’t perfect.
  • They might be hesitant to spend money on themselves or others.
  • They have an inclination to hang onto items with no noticeable value.
  • They are extreme perfectionists, resulting in dysfunction and agony when excellence is not achieved, such as feeling unable to cease a project or a task because they don’t meet their own strict standards.
  • They have a desire to be in control of people, tasks and situations, and incapability to assign tasks.
  • They tend to neglect friends and enjoyable activities because of extreme commitment to work or a project.
  • Inability to abandon broken or valueless objects
  • They are rigid and stubborn, Inflexible about ethics or values.


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