Types of personality disorders

What Is a Personality Disorder?

Personality disorders involve enduring patterns of thinking, feeling and relating to others that cause significant distress or difficulties in everyday functioning.

Assessment considers patterns over time, their impact across different settings and the person’s cultural and individual circumstances. An isolated argument, selfish decision or intense emotion is not enough.

This article focuses on antisocial, narcissistic, borderline and histrionic personality disorders. These are only part of the wider range of personality disorders.

Having a diagnosis does not describe every aspect of a person, determine their character or establish that they are abusive. Harmful behaviour also occurs in people without a personality disorder.

Psychopathy, Sociopathy and Antisocial Personality Disorder

Psychopathy and sociopathy are often used as though they describe two clearly separate diagnoses. They are not separate diagnostic categories in the DSM-5-TR personality disorder classification, and their use varies across research, clinical discussion and popular culture.

They are often discussed in relation to antisocial personality disorder (ASPD). This diagnosis involves a persistent pattern of disregarding or violating other people’s rights, assessed within a broader developmental history.

Features considered in assessment may include repeated deceit, irresponsibility, impulsivity, aggression and limited remorse. A clinician evaluates the overall pattern rather than assigning a label from a single behaviour.

Why Popular Shortcuts Are Misleading

Confidence, charisma, a particular career, intense eye contact or an interest in risk cannot establish psychopathy or ASPD. A supposed “psychopathic stare” is not a diagnostic test.

Fictional characters can prompt discussion, but television portrayals are not clinical case studies. Likewise, a public outburst does not reveal someone’s diagnosis.

Narcissistic Personality Disorder: More Than Self-Confidence

Narcissistic personality disorder (NPD) involves a persistent pattern that can include grandiosity, a strong need for admiration, entitlement and difficulties with empathy.

These features may affect relationships and everyday functioning. However, confidence, ambition or sensitivity to criticism alone does not establish NPD.

Traits Are Different From a Diagnosis

Someone may behave selfishly, seek reassurance or become defensive without meeting the criteria for a personality disorder. Diagnosis requires more than recognising a few familiar traits.

Mirroring Does Not Automatically Mean Manipulation

Sharing interests or adopting another person’s expressions can be part of ordinary social connection. Similarity alone does not prove deception.

If you are concerned about a relationship, consider concrete behaviour: are boundaries respected, is information used honestly, and can disagreement happen without punishment?

When Other People Become Involved

Friends, relatives or colleagues may sometimes be drawn into a dispute to pressure or discredit someone. Describe the actions involved rather than assuming that everyone taking a side is part of a coordinated plan.

Internet terms such as “flying monkeys” are not clinical diagnoses. Specific descriptions of messages, threats or interference are more useful when seeking support.

Borderline Personality Disorder: Emotions, Identity and Relationships

Borderline personality disorder (BPD) can involve difficulties regulating emotions, an unstable sense of self and intense relationship difficulties. Experiences vary considerably between individuals.

Possible symptoms include:

• A strong fear of abandonment.
• Intense and rapidly changing emotions.
• Instability in self-image and close relationships.
• Impulsive behaviour that can have harmful consequences.
• Persistent feelings of emptiness.
• Self-harm or suicidal thoughts in some people.

Not everyone experiences every symptom. Recognising one of these experiences in yourself or someone else does not confirm BPD.

Treatment and Improvement Are Possible

Psychotherapy is central to treatment. Dialectical behaviour therapy (DBT) is one established approach that teaches skills for managing emotions, distress and relationships. Treatment should be tailored to the individual.

BPD does not make someone inherently manipulative or incapable of caring relationships. Compassion and accountability can coexist: emotional pain deserves support, and harmful behaviour still needs to be addressed.

Histrionic Personality Disorder: Looking Beyond “Drama”

Histrionic personality disorder (HPD) is associated with a persistent pattern of excessive emotionality and attention-seeking that affects functioning or relationships.

Assessment may consider discomfort when not receiving attention, a highly expressive style and a tendency to perceive relationships as closer than they are.

Being outgoing, expressive, flirtatious or upset during a conversation is not enough to establish HPD. Neither gender nor appearance can tell you whether someone has this condition.

What Causes Personality Disorders?

There is no single explanation that applies to every person. Development can involve biological, psychological and environmental influences.

It is misleading to assume that one parenting style inevitably produces a particular disorder, or that knowing someone’s childhood explains all their adult behaviour.

Personal history can be relevant to assessment and therapy. It should not become a shortcut for blaming families or excusing harm.

Can Personality Disorders Be Treated?

Treatment can help people understand recurring difficulties, develop coping skills and improve their functioning and relationships. Psychotherapy is a central treatment approach.

The appropriate support depends on the diagnosis, symptoms, co-occurring conditions and individual circumstances. Progress may take time, and outcomes differ.

Claims that an entire group “cannot change” or always manipulates therapists are not a fair basis for understanding treatment. If you are concerned about your own experiences, a qualified professional can discuss assessment and suitable options.

Focus on Behaviour When a Relationship Feels Harmful

You do not need to establish someone’s diagnosis before taking threats, coercion, humiliation or violence seriously.

Questions about your experience may be more useful than trying to identify a label:

• Can I disagree without fearing retaliation?
• Are my boundaries and privacy respected?
• Can concerns be discussed without intimidation?
• Does the person take responsibility for harmful actions?
• Do apologies lead to meaningful changes?

A diagnosis does not excuse abuse, and a lack of diagnosis does not make harmful behaviour acceptable.

For further reflection, explore my articles on love and tension in relationships and emotional pain .

Your Experience Matters

If these themes connect with your own life, you are welcome to contact me about your story . Share only what feels comfortable, and avoid sending sensitive records or identifying details about other people.

Author correspondence is separate from mental health care or crisis support. For assessment or treatment, contact a qualified healthcare professional.