Personality Disorders Explained: What They Are, What They Are Not
This article is general information published by the practice of Dr. Sholeh Toobaei, Specialist Psychiatrist, Dubai. It has not yet been individually reviewed by a clinician and is not a substitute for personal medical advice. Published: 1 September 2026.
Scope: This article is general information about personality disorders. It is not a diagnosis and does not describe any specific person. Understanding what these conditions are can be helpful whether you are wondering about yourself or trying to understand someone close to you.
What is a personality disorder, in simple terms?
Personality is the set of patterns in how a person thinks, feels, relates to others, and handles stress. For most people, these patterns are flexible enough to adapt to different situations. A personality disorder is when those patterns become rigid, inflexible, and self-defeating to the point that they cause genuine problems — in relationships, at work, in how the person feels about themselves.
The key word is rigid. A personality disorder is not about having strong opinions or being difficult in a few areas. It is about a pervasive, inflexible pattern that shows up across many areas of life and resists change even when it causes significant problems. The person usually cannot simply "decide to be different" because the patterns are automatic and deeply ingrained.
Importantly, personality disorders are not character attacks. They are not about being a bad person. They are about patterns that developed — often in response to early life experiences — that no longer serve the person but are extremely hard to unlearn.
What are the main types?
Personality disorders are grouped into three clusters, though not everyone fits neatly into one.
Cluster A — odd or eccentric: Paranoid personality disorder involves a deep, pervasive distrust of other people's motives. The person believes others are trying to harm, deceive, or exploit them, even when there is little evidence. They are hypervigilant to threats, hold grudges, and struggle to trust. Schizoid personality disorder involves a longstanding pattern of detachment from social relationships and limited emotional expression. The person is not necessarily anxious about social situations — they genuinely prefer solitude. Schizotypal personality disorder involves discomfort with close relationships, cognitive distortions, and odd behavioural patterns or thinking.
Cluster B — dramatic, emotional, or erratic: Borderline personality disorder is perhaps the most misunderstood. It involves difficulty regulating emotions, unstable relationships, a fragmented sense of self, and intense fear of abandonment. Relationships swing between idealisation and devaluation. The emotional pain is usually severe, and self-harm or suicidal behaviour is common. Beneath the surface, most people with borderline personality disorder are deeply sensitive and desperate for connection. Narcissistic personality disorder involves a grandiose sense of self-importance, a need for admiration, and a lack of empathy for others. The surface appearance is often confidence, but the underlying experience is fragile self-esteem that is easily shattered by criticism or failure. Antisocial personality disorder involves a disregard for the rights of others, lack of empathy, and repeated violation of social norms. This is the diagnosis most associated with criminal behaviour, but it is more complex than that.
Cluster C — anxious or fearful: Avoidant personality disorder involves social inhibition, feelings of inadequacy, and hypersensitivity to negative evaluation. It is more severe than shyness — it is a deep fear of rejection that prevents people from pursuing relationships, jobs, or opportunities. Dependent personality disorder involves an excessive need to be taken care of, leading to submissive and clinging behaviour. The person struggles to make everyday decisions without reassurance and fears being left to care for themselves. Obsessive-compulsive personality disorder (OCPD) is different from OCD. It involves a preoccupation with orderliness, perfectionism, and control — at the expense of flexibility and efficiency. The person with OCPD believes their way is the right way and has genuine difficulty delegating or accepting that "good enough" is acceptable.
How are personality disorders diagnosed?
By a careful clinical assessment that looks at the person's lifelong pattern — not just their current state. Because personality is so deeply developed, these conditions typically emerge in adolescence or early adulthood and are relatively stable over time. A psychiatrist does not diagnose a personality disorder based on how someone is behaving during a single crisis.
The assessment looks at how the person relates to others, handles stress, perceives themselves, manages emotions, and copes with change. It also involves ruling out other conditions that can look similar — depression, anxiety, bipolar disorder, trauma-related conditions.
What causes personality disorders?
The answer is probably: both biology and experience. Temperament is partly genetic — some people are born more emotionally sensitive, more inhibited, or more impulsive. Then life experience shapes how those traits develop. Adverse childhood experiences — neglect, abuse, inconsistent parenting, chronic invalidation — are strongly associated with personality disorders, particularly borderline and avoidant types.
But correlation is not causation. Many people experience adversity and do not develop a personality disorder. Some people with very supportive upbringings do. The interaction between biology and environment is complex and not fully understood.
What treatment is available?
Psychotherapy is the mainstay. Medication does not treat personality disorders directly, though it can help with specific symptoms like depression, anxiety, or mood instability.
Dialectical Behaviour Therapy (DBT) was developed specifically for borderline personality disorder and has strong evidence. It teaches four skill sets: mindfulness (being present), distress tolerance (coping with intense emotions without making things worse), emotion regulation (understanding and managing feelings), and interpersonal effectiveness (communicating needs and setting boundaries).
Mentalisation-Based Therapy (MBT) focuses on improving the ability to understand one's own mental state and the mental states of others — which is often impaired in borderline personality disorder.
Transference-Focused Psychotherapy (TFP) uses the relationship between therapist and patient to understand and change maladaptive patterns.
Cognitive behavioural therapy adapted for personality disorders can also be effective, particularly for avoidant and obsessive-compulsive personality disorders.
Treatment takes time — often months or years. Improvement is real but gradual. The good news is that personality disorders are more treatable than the reputation suggests, and many people experience significant improvement over time.
Can people with personality disorders get better?
Yes. Long-term studies show that many people with personality disorders — particularly borderline personality disorder — experience significant improvement over a ten-to-fifteen-year period. The trajectory is not always linear, and setbacks happen, but the overall trend for most people is improvement.
For many, the diagnosis itself is the beginning of feeling understood. Being told that your difficulties have a name and a treatment pathway is, for many people, the first time they feel less broken.
When should I seek help?
If you recognise patterns in yourself that have been present for years, cause significant problems in multiple areas of life, and resist your own efforts to change, seek a professional assessment. If you are wondering about someone close to you and their behaviour is affecting your life, that is also a valid reason to seek guidance. Seek urgent help — call 999 (police) or 998 (ambulance) in the UAE, or go to the nearest emergency department — if you are having thoughts of self-harm, if you are engaging in self-harm, or if you feel unable to keep yourself safe. For non-urgent enquiries, use the appointment request form on this website. This practice does not operate a monitored telephone line, and a message sent through the form may not be read straight away.