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Personality Disorders

Personality Disorders

Personality disorders are characterized by long-term patterns of thoughts and behaviours that cause serious problems in relationships and work. A personality disorder can be seen as a way pervasive of thinking, feeling, and behaving that differs from the expectations of culture, causes distress, or problems in functioning. Personality disorders often continue throughout adulthood and are only diagnosed after the age of 18. Individuals with personality disorders are often at a greater risk for self-harm and suicide. 

Personality is described as a distinct set of traits, style of behaviour, and patterns of thinking that make up our character. Individuals with healthy personalities are able to cope with normal stresses and do not have difficulty forming relationships. Our personalities can be influenced by both genetic factors and environmental circumstances. 

There are three different categories of personality disorders: 
  • Cluster A: characterized by odd or eccentric patterns of thinking and social detachment 
    • Paranoid Personality Disorder 
    • Schizoid Personality Disorder 
    • Schizotypal Personality Disorder 
  • Cluster B: characterized by unstable emotions and erratic behaviour
    • Antisocial Personality Disorder 
    • Borderline Personality Disorder 
    • Histrionic Personality Disorder 
    • Narcissistic Personality Disorder  
  • Cluster C: characterized by anxious or fearful patterns of thinking and relating to others 
    • Avoidant Personality Disorder 
    • Dependent Personality Disorder 
    • Obsessive-Compulsive Personality Disorder 
Although the cause of personality disorders is not known, there are some factors that seem to increase the risk of developing a personality disorder, such as: 
  • Family history of personality disorders or other mental illness
  • Abusive, unstable, or chaotic family life during childhood 
  • Being diagnosed with a conduct disorder in childhood 
  • Variations in brain chemistry or structure 

How are personality disorders treated? 


Both individual and group psychotherapy have been found to be effective if the individual is motivated to engage in treatment. Both dialectical behaviour therapy (DBT) and cognitive behavioural therapy (CBT) have been found to be helpful to help the individual feel validated and gain insight into their personality patterns. Additionally, psychotherapy can help individuals to understand the effects of their behaviour on relationships and learn to better cope with symptoms of these disorders. Specific types of treatments will depend on the specific personality disorder.


If you or someone you know is struggling with a personality disorder, contact us to see how we can help.

Call us now to book an appointment!

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Toronto Psychologists Clinic | Therapy, Cognitive Behavioral
logo-Toronto-Psychologists | Therapy, Cognitive Behavioral
  • Who We Are
  • Services
    • Who We Serve
    • Treatment Approach
    • Family Therapy
      • Co-Parenting
      • Codependency
      • Divorce
      • Infertility
      • Miscarriage
      • Sexual Dysfunction
    • Treatment Areas
    • Anxiety
      • What is Anxiety?
      • Agoraphobia
      • Obsessive-Compulsive Disorders
      • Panic Attacks
      • Perfectionism
      • Phobias and Fears
      • Selective Mutism
      • Stress Management
      • Worry
    • Depression
      • What is Depression?
      • Episodes of Sadness
      • Feelings of Worthlessness
      • Life Dissatisfaction
      • Postpartum Mood Disorder
      • Seasonal Affective Disorder
      • Self-Harm
      • Suicidal Thoughts
      • Unresolved Guilt
    • Trauma
      • What is Trauma?
      • Acute Stress Disorder
      • Adjustment Disorder
      • Complex Trauma (C-PTSD)
      • Domestic Violence
      • Emotional Abuse
      • Physical Abuse
      • Post-Traumatic Stress Disorder (PTSD)
      • Reactive Attachment Disorder
      • Sexual Abuse
      • Sexual Harassment
    • Adjusting to Life Transitions
      • Hypersomnia
      • Insomnia
      • Night Terrors
    • Behaviour Problems
      • Attention Deficit Hyperactivity Disorder (ADHD)
      • Aggression
      • Anger
      • Impulsive Behaviour
      • Oppositional Behaviour
      • Temper Tantrums
    • Eating Disorders
      • Anorexia Nervosa
      • Binge Eating
      • Bulimia Nervosa
      • Pica
    • Personality Disorders
      • Personality Disorders
      • Paranoid Personality Disorder
      • Schizoid Personality Disorder
      • Schizotypal Personality Disorder
      • Antisocial Personality Disorder
      • Borderline Personality Disorder
      • Histrionic Personality Disorder
      • Narcissistic Personality Disorder
      • Obsessive Compulsive Personality Disorder
      • Avoidant Personality Disorder
      • Dependent Personality Disorder
    • Other Therapy Services
      • Addiction
      • Assertiveness
      • Bipolar Disorder
      • Body Dysmorphic Disorder
      • Body Image
      • Burnout
      • Chronic Illness
      • Chronic Pain
      • Coping Skills
      • Delusional Disorder
      • Disability
      • Emotional Dysregulation
      • Excoriation
      • Gender Identity
      • Grief
      • Hoarding
      • Premenstrual Dysphoric Disorder
      • Psychosis
      • Self-Awareness
      • Self-Esteem
      • Schizophrenia
      • Stress
      • Substance Use Disorder
      • Trichotillomania
    • Treatment Modalities
      • CBT
      • Acceptance and Commitment therapy (ACT)
      • Behavioural Therapy
      • Client-Centered Therapy
      • Cognitive Processing Therapy (CPT)
      • Dialectical Behaviour Therapy (DBT)
      • Emotion Focused Therapy (EFT)
      • Exposure Therapy
      • Exposure and Response Prevention (ERP)
      • Interpersonal Psychotherapy (IPT)
      • Psychodynamic Therapy
      • Motivational Interviewing
      • Mindfulness
      • Mindfulness-Based Cognitive Therapy
      • Schema Focused Therapy
      • Solution Focused Therapy
  • Blog
  • FAQs
  • Contact

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