Personality Disorders

At Hamilton Psychiatric Services in Hamilton, NJ, Dr. Mirza provides compassionate, evidence-based diagnosis and treatment for the full range of personality disorders, helping patients build healthier relationships, regulate emotions, and lead more fulfilling lives.

Personality disorders are a group of mental health conditions defined by enduring patterns of inner experience and behavior that deviate markedly from the expectations of the individual's culture, are pervasive and inflexible, begin in adolescence or early adulthood, remain stable over time, and lead to significant distress or functional impairment. Unlike mood disorders or anxiety disorders, which tend to occur in discrete episodes, personality disorders shape a person's core way of thinking, feeling, and relating to others across virtually all areas of life. Accurate diagnosis and appropriate treatment can meaningfully improve quality of life, even for patients who have struggled for many years without understanding the root cause of their difficulties.

Cluster A: Odd or Eccentric Patterns

Cluster A personality disorders are characterized by odd, eccentric thinking or behavior that can create significant social difficulty. Paranoid personality disorder involves a pervasive distrust and suspicion of others — interpreting others' motives as malevolent even without adequate evidence. Patients may be reluctant to confide in others, read hidden meanings into benign remarks, and hold persistent grudges. Schizoid personality disorder is marked by detachment from social relationships and a limited range of emotional expression. Individuals typically prefer solitary activities, have little interest in close relationships, and appear indifferent to praise or criticism. Schizotypal personality disorder involves peculiarities of thought, perception, and behavior — including ideas of reference, odd beliefs or magical thinking, unusual perceptual experiences, and social anxiety that does not diminish with familiarity — that fall short of a psychotic disorder but can significantly impair functioning.

Cluster B: Dramatic, Emotional, or Erratic Patterns

Cluster B personality disorders involve dramatic, erratic, or intensely emotional behavior patterns that tend to create turbulent relationships and significant functional impairment.

Antisocial personality disorder (ASPD) is defined by a persistent pattern of disregard for and violation of the rights of others, including deceitfulness, impulsivity, irritability, reckless disregard for safety, and lack of remorse. ASPD is more prevalent in men and is associated with a history of conduct disorder in childhood or adolescence.

Narcissistic personality disorder (NPD) involves a grandiose sense of self-importance, a preoccupation with fantasies of unlimited success or power, a belief in one's own special status, a need for excessive admiration, a sense of entitlement, and a lack of empathy. While NPD can appear as confidence or ambition on the surface, it typically stems from deep-seated vulnerability and can produce profound relational difficulties.

Histrionic personality disorder is characterized by pervasive attention-seeking behavior, excessive emotionality, and a pattern of excessive dramatization that can interfere with genuine intimacy and professional relationships.

Borderline Personality Disorder (BPD)

Borderline personality disorder is one of the most clinically significant and frequently treated personality disorders in psychiatric practice. BPD is defined by pervasive instability across mood, self-image, interpersonal relationships, and behavior. The core features of BPD include:

• Frantic efforts to avoid real or imagined abandonment — whether by clinging behaviors or pre-emptive withdrawal
• Unstable and intense interpersonal relationships that oscillate between idealization and devaluation (often called "splitting")
• Persistently unstable sense of self or identity
• Impulsive behavior in areas such as spending, substance use, sexual activity, or reckless driving
• Recurrent suicidal behavior, gestures, threats, or self-injurious behavior
• Severe emotional dysregulation — intense, rapidly shifting moods that can last hours to days
• Chronic feelings of emptiness
• Intense, inappropriate anger or difficulty controlling anger
• Transient, stress-related paranoid ideation or severe dissociative symptoms

BPD is often misdiagnosed as bipolar disorder, major depression, or PTSD because of overlapping features. A thorough longitudinal psychiatric evaluation is essential to establish the correct diagnosis and build a treatment plan that actually addresses the underlying patterns.

Cluster C: Anxious or Fearful Patterns

Cluster C personality disorders involve anxious, fearful patterns that frequently co-occur with anxiety and depressive disorders. Avoidant personality disorder involves social inhibition, feelings of inadequacy, and hypersensitivity to negative evaluation — distinct from social anxiety disorder in its pervasive impact on self-concept and the degree to which avoidance shapes one's entire life structure. Dependent personality disorder is characterized by an excessive need to be taken care of that leads to submissive, clinging behavior and fear of separation. Obsessive-compulsive personality disorder (OCPD) — not to be confused with OCD — involves preoccupation with orderliness, perfectionism, and mental and interpersonal control at the expense of flexibility, openness, and efficiency.

How Personality Disorders Are Diagnosed

Diagnosing a personality disorder requires careful, comprehensive psychiatric evaluation. Dr. Mirza conducts a detailed clinical interview that covers current symptoms and functioning, personal developmental and relationship history, prior psychiatric treatment, family psychiatric history, and patterns of behavior that have persisted across different life contexts and relationships. Standardized assessment tools may be used to supplement the clinical interview. Because personality disorder symptoms can overlap with mood disorders, trauma responses, and other psychiatric conditions, a thorough evaluation spanning multiple sessions is often necessary before a definitive diagnosis is established. It is also common for individuals to meet criteria for more than one personality disorder simultaneously, and co-occurring conditions such as major depression, anxiety disorders, substance use disorders, or PTSD are frequently present.

Treatment Approaches

Personality disorders have historically been viewed as difficult to treat, but substantial clinical evidence now supports the effectiveness of targeted psychotherapy and, where indicated, medication management for symptom relief.

Dialectical Behavior Therapy (DBT)
DBT is the gold-standard psychotherapy for borderline personality disorder and has also shown benefit for other conditions involving emotional dysregulation. Developed by Dr. Marsha Linehan, DBT combines cognitive-behavioral techniques with acceptance-based strategies drawn from mindfulness practice. The core skill modules — mindfulness, distress tolerance, emotion regulation, and interpersonal effectiveness — directly target the emotion dysregulation, impulsivity, and relationship instability that characterize BPD. DBT can be delivered in individual therapy, group skills training, or both. Dr. Mirza collaborates closely with DBT-trained therapists to ensure patients receive integrated care.

Cognitive-Behavioral Therapy (CBT) and Schema Therapy
CBT helps patients with personality disorders identify maladaptive thought patterns and develop healthier ways of interpreting interpersonal situations. Schema therapy — an extension of CBT developed specifically for personality disorders — targets deeply ingrained negative belief systems, known as early maladaptive schemas, that developed in childhood and continue to drive self-defeating patterns in adulthood. These approaches are particularly useful for Cluster C disorders and for avoidant, dependent, and narcissistic patterns.

Medication Management
No medication has been specifically approved for the treatment of personality disorders, but pharmacotherapy can play an important supportive role by targeting specific symptom clusters. Mood stabilizers and atypical antipsychotics may reduce impulsivity, emotional dysregulation, and brief psychotic symptoms in BPD. Antidepressants can address co-occurring depression and anxiety. Medication management at Hamilton Psychiatric Services is carefully individualized, with ongoing monitoring to assess efficacy and tolerability. Medication is never used as a substitute for psychotherapy in personality disorder treatment but can remove symptom barriers that make engagement in therapy more difficult.

Psychotherapy and Long-Term Support
Sustained psychotherapy is the foundation of effective personality disorder treatment. Personality patterns develop over years and change gradually; consistent, skilled therapeutic work is what drives lasting improvement. Dr. Mirza provides ongoing psychiatric oversight, coordinates with treating therapists, and adjusts treatment plans as clinical progress is made.

Taking the First Step

Many individuals with personality disorders have spent years feeling misunderstood, mislabeled, or told that nothing can help them. That experience is not a reflection of reality — it reflects inadequate evaluation and treatment. With the right diagnosis and a committed treatment relationship, meaningful improvement is achievable. If you recognize these patterns in yourself or a loved one, an evaluation at Hamilton Psychiatric Services is a practical and confidential first step.

Call 609-631-7770 or submit an appointment request online to schedule a psychiatric evaluation with Dr. Mirza. We serve patients throughout Hamilton, Trenton, and Mercer County, NJ.

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