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Personality disorders - what are they and how to recognize them?

15 sierpnia 2025
Personality is a unique set of psychological and emotional traits that shapes how we perceive the world, our relationships with others, and our reactions to stress. Sometimes, however, patterns of thinking, feeling, and behavior become rigid, maladaptive, and interfere with daily functioning. This is when we speak of a personality disorder that requires professional help. It is not about character or quirks, but a complex condition.

Personality disorders do not appear suddenly but usually develop gradually, often beginning in early life and becoming entrenched in adulthood. People affected by them are often unaware that their way of functioning deviates from the norm. Those around them, however, more easily notice their impulsivity, emotional coldness, and insecurity, and sometimes even manipulative behavior.

Mateusz Nesterok, an experienced psychologist working with the ONSEN® brand, also emphasizes that one of the most challenging aspects of diagnosing personality disorders is their “invisibility.” Serious personality disorders are often mistaken for depression or anxiety or simply labeled as a difficult character. Yet, an accurate diagnosis is the first step toward effective help.

Types and symptoms of personality disorders

According to the widely used DSM-5 classification, personality disorders are divided into three main clusters. These are referred to as clusters A, B, and C, each describing a group of behavior and experience patterns that share a common psychopathological basis, which forms the foundation for their classification.

Cluster A includes odd or eccentric personalities, such as paranoid, schizoid, and schizotypal personalities. These individuals are often withdrawn, distrustful, and suspicious and tend to struggle with building relationships.

Cluster B refers to dramatic, emotional, or unpredictable personalities, which include borderline, narcissistic, histrionic, and antisocial (dissocial) personalities. The common traits of this group are impulse control difficulties and emotional instability, as well as frequent social conflicts.

Cluster C includes anxious personalities, such as avoidant, dependent, and obsessive-compulsive (anankastic) personalities. These individuals are often overly dependent on others and have a strong fear of criticism and failure, and their daily functioning is frequently paralyzed by perfectionism or fear of rejection.

The most common personality disorders

Emotionally unstable personality (borderline) is characterized by an intense fear of abandonment, which is often unconscious, meaning the affected person is unaware of it. Additionally, borderline personality is marked by unstable relationships, strong impulsivity, and extreme mood swings that are not based on rational causes. People with borderline may simultaneously idealize and devalue their loved ones and often suffer from a chronic sense of emptiness.

Paranoid personality is defined by extreme suspicion, distrust, and a tendency to interpret the actions of others as hostile. Individuals with this disorder are convinced of constant threats, which leads to isolation and conflict.

Schizoid personality manifests through emotional coldness and a limited range of emotional expression as well as a lack of interest in social relationships. Such individuals often choose solitude and feel no need for closeness.

Dissocial personality is a pattern of disregarding social norms and the rights of others and is therefore also referred to as antisocial. Those affected show a lack of empathy, manipulative tendencies, and impulsivity and often have conflicts with the law.

Histrionic personality is characterized by excessive emotionality, a need to be the center of attention, and theatrical behavior, as well as superficial emotions. People with this disorder often dramatize and provoke others, without objective reasons.

Anankastic personality, also known as obsessive-compulsive personality, is associated with excessive perfectionism. Such individuals are marked by meticulousness, a need for control, and inflexibility, which often irritates their surroundings. They find it difficult to make spontaneous decisions because they perceive spontaneity as a threat requiring adaptability.

Avoidant personality is defined by a strong fear of criticism and rejection, leading to avoidance of social contact. Individuals with avoidant personality desire relationships but are paralyzed by their fear of embarrassment.

Dependent personality is characterized by a lack of self-confidence, a need for support, and difficulty making decisions, which often results in excessive submissiveness toward partners. They frequently remain in toxic relationships out of fear of being alone.
PTSD, or post-traumatic stress disorder, is not directly classified as a personality disorder but can significantly affect behavior and emotions. Symptoms mainly include recurrent traumatic memories, avoidance of trauma-related triggers, and heightened alertness. PTSD may lead to social isolation or depression, as well as addictions and sleep disorders.

Impulse control disorders include pathological gambling, kleptomania, pyromania, trichotillomania, and other impulsive behaviors that provide temporary relief but are harmful in the long term. People with these disorders often struggle to stop these behaviors despite being aware of their negative consequences.

Pathological gambling is the compulsion to gamble despite financial, familial, and social losses. Pyromania involves deliberately setting fires to relieve tension. Kleptomania, on the other hand, is compulsive stealing driven by an inner urge rather than necessity.

The group of paraphilic disorders includes pedophilia, voyeurism, exhibitionism, and sexual masochism or sadism. These behaviors may have criminal implications, and their treatment requires a specialized psychotherapeutic approach, often combined with pharmacotherapy. Even the diagnosis of paraphilias can be challenging.

Diagnosis and therapy of personality disorders

In principle, the diagnosis of personality disorders is based on a thorough clinical interview, behavioral observation, and psychological tests such as MMPI-2 or SCID-5-PD, as well as disorder-specific tools. This process is often time-consuming, as the symptoms of personality disorders may overlap with other mental health conditions.

Mateusz Nesterok emphasizes that the foundation of diagnosis is understanding how personality patterns affect daily life, relationships, and emotions. It is also crucial to distinguish between personality traits and their pathological form.

It should be noted that the treatment of personality disorders requires an individualized approach. The most effective methods include long-term psychotherapy, sometimes in inpatient settings. In some cases, supportive pharmacotherapy is also used as a valuable complement to therapy.

It is extremely important to create a stable environment for the affected person. The success of therapy is also influenced by a consistent daily rhythm, healthy sleep conditions, and support from loved ones. Thoughtful solutions, such as an ergonomic mattress adapted to individual needs, can be a valuable supporting factor.

Support, therapy and daily life

Nesterok emphasizes that personality disorders do not have to be a life sentence. Although the therapeutic process is demanding and often lengthy, it is possible to significantly improve quality of life. The key lies in awareness and consistent self-work, as well as support from professionals and loved ones.

One of the biggest barriers in therapy is the lack of acceptance of the problem by the patient. However, once this resistance is overcome, real change becomes possible – including better relationships, greater emotional stability, and fewer conflicts. Often, the therapeutic relationship becomes the first safe interaction for such individuals.

Daily lifestyle factors such as sleep, a healthy diet, physical activity, and a regulated daily rhythm are also crucial. These not only promote mental stability but also physical health. It is worth noting that a properly selected mattress can significantly impact sleep quality and recovery.

We also encourage you to explore other articles on the best sleep and health blog, as well as the Encyclopedia of Healthy Sleep prepared by the ONSEN® team of specialists. For those who care about spine health, we recommend a set of spine exercises prepared by our physiotherapist.

FAQ: Personality disorders

What are personality disorders?

Personality disorders are persistent patterns of thinking, feeling, and behaving that significantly deviate from social norms and impair functioning in relationships and daily life. They are not temporary emotional problems but deeply ingrained traits that shape a person's identity. Common types include borderline, narcissistic, dependent, obsessive-compulsive, and antisocial personality disorders.

What helps with personality disorders?

The most effective treatment is psychotherapy, particularly long-term therapy, which helps gradually change rigid thought patterns and behavioral habits. Depending on the disorder, cognitive-behavioral therapy, psychodynamic therapy, or dialectical behavior therapy (DBT) may be used. In some cases, a psychiatrist may recommend supportive medication, mainly to reduce anxiety or depression symptoms, which often co-occur with personality disorders. Psychoeducation and working on building stable relationships and healthy habits are also essential.

What are the symptoms of personality disorders?

Symptoms vary depending on the type of disorder but often include difficulties maintaining stable relationships, impulsivity, excessive need for control, mood swings, intense fear of rejection, or conversely, lack of empathy and disregard for social norms. Individuals may also experience a chronic sense of emptiness, low self-esteem, and rigid ways of thinking and reacting, leading to recurring conflicts in work and personal life.

Are personality disorders mental illnesses?

Yes, personality disorders are recognized as mental disorders and are classified in international diagnostic systems (ICD-10, ICD-11, and DSM-5). Although they differ from illnesses such as depression or schizophrenia, they require professional diagnosis and often long-term therapy. They are not a sign of "weak character," as some might believe, but the result of complex biological, psychological, and environmental factors.

How can you help someone with a personality disorder?

The key is to offer understanding and patience without judgment or trying to "fix" the person. Support involves encouraging them to seek therapy, helping them find a suitable specialist, and creating a stable and predictable environment. It is also important to set personal boundaries to avoid emotional burnout. Family or group therapy can be helpful in understanding the dynamics of personality disorders and improving relationships.

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