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How to Identify a Teenage Personality Disorder

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A personality disorder is a type of mental health disorder that usually begins during adolescence. Therefore, a teenage personality disorder can significantly disrupt the development of a teen’s identity, relationships, and emotion regulation. Moreover, untreated personality disorders can lead to social isolation and/or substance abuse.

Personality disorders typically involve unhealthy patterns of thinking, functioning, and behavior. Hence, teens with personality disorders have difficulty understanding and relating to other people and to their environment. As a result, their family connections, social life, and academic progress may suffer.

The Four Defining Features of a Teenage Personality Disorder

Experts identify four key features of personality disorders:

  1. Distorted thinking and perception
  2. Problematic emotional responses
  3. Over- or under-regulated impulse control
  4. Difficulty functioning in social interactions and relationships.

These four features combine in various ways to form the 10 personality disorders described in the fifth edition of the Diagnostic and Statistical Manual for Mental Disorders (DSM-5).

Newport Academy Mental Health Resources: teenage personality disorder

Diagnosis of a Personality Disorder in Teens

To be diagnosed with a personality disorder, a teenager must meet the criteria established by the DSM-5 for that disorder. Furthermore, diagnosis of a teenage personality disorder requires that the symptoms cause difficulty functioning in daily life.

In addition, the disorder must cause significant distress in order for a personality disorder to be diagnosed. Moreover, distress and impairment of functioning must be affected in at least two of the four key areas listed above.

Diagnosis of adolescent personality disorders can be difficult, as such disorders share certain symptoms. Plus, a teen may suffer from more than one type of personality disorder. And other, more common psychological disorders in teens, such as anxiety or depression, may complicate the diagnosis. Therefore, a professional assessment is essential.

Clusters and Types of Teenage Personality Disorder

The DSM-5 lists three “clusters” of personality disorders, and 10 specific disorders within those categories.

Cluster A personality disorders include disorders that involve strange, bizarre, and, eccentric thinking or behavior. These disorders include Paranoid Personality Disorder, Schizoid Personality Disorder, and Schizotypal Personality Disorder.

Cluster B personality disorders include disorders that involve dramatic, overly emotional, or unpredictable thinking and behavior. These include Antisocial Personality Disorder, Borderline Personality Disorder, Histrionic Personality Disorder, and Narcissistic Personality Disorder.

Cluster C personality disorders include disorders that involve anxious, fearful thinking or behavior. They include Avoidant Personality Disorder, Dependent Personality Disorder, and Obsessive-Compulsive Personality Disorder.

Causes of and Risk Factors for a Teenage Personality Disorder

Personality development for teenagers involves the establishment of ways of thinking, feeling, and behaving. Personality traits evolve as a result of both genetics and the circumstances in which a child grows up. Hence, experts believe that personality disorders are also a result of both genes and environment. A teen’s genetic profile might make them more vulnerable to developing a personality disorder. Moreover, a particular life event or situation may trigger the development of a teenage personality disorder.

Therefore, risk factors associated with personality disorders include the following:

  • Family history of personality disorders or other mental illnesses
  • Abusive, unstable, or chaotic childhood
  • Diagnosis of a behavioral disorder in childhood
  • Variations in brain structure and chemistry.
Newport Academy Mental Health Resources: teenage personality disorder

Cluster A Personality Disorders

 There are three types of Cluster A personality disorders, summarized briefly below.

Paranoid Personality Disorder involves chronic, pervasive distrust and suspicion of others and their motives. This includes a belief that others are trying to harm or deceive you. In addition, people with this disorder are hesitant to confide in others and tend to be easily insulted.

Schizoid Personality Disorder features a lack of interest in social or personal relationships. Moreover, this disorder includes the inability to take pleasure in activities and a limited range of emotional expression.

Schizotypal Personality Disorder symptoms include eccentric ways of talking or speaking. Furthermore, people with this disorder exhibit social anxiety, suspiciousness, and a flat emotional affect. In addition, they may believe that they can influence people and events with their thinking. They may also believe that everyday events contain hidden messages just for them.

Next, let’s take a closer look at Cluster B personality disorders.

Antisocial Personality Disorder 

People with this disorder show a disregard for other people’s needs or feelings. In addition, Antisocial Personality Disorder may involve lying, stealing, and other ways of deceiving or conning people. Moreover, this disorder may manifest as aggressive and violent behavior.

People with Antisocial Personality Disorder often disregard their own safety or the safety of others. As a result, they tend to repeatedly violate others’ rights and thus have recurring legal issues. Furthermore, they do not feel remorse for their behavior or how it affects others.

Experts do not diagnose children and teens under 18 with Antisocial Personality Disorder. However, younger teenagers who engage in sociopathic behavior, such as setting fires or other delinquent acts, often receive a diagnosis of Antisocial Personality Disorder later on. According to research, children with Conduct Disorder are much more likely to develop Antisocial Personality Disorder as adults. (Children with Conduct Disorder show aggression toward people and animals, destroy property, exhibit deceitfulness, and repeatedly violate rules.)

Histrionic Personality Disorder  

Histrionic Personality Disorder is included in the second edition of the DSM, from 1968. However, some mental health experts believe that Histrionic Personality Disorder is more accurately an exhibitionistic subtype of narcissism.

In order for a mental health professional to diagnose Histrionic Personality Disorder in teenagers, an individual must exhibit five or more of the following symptoms:

  • Self-centeredness—uncomfortable when not the center of attention
  • Constantly seeking reassurance or approval
  • Inappropriately seductive appearance or behavior
  • Rapidly shifting emotional states that appear shallow to others
  • Overly concerned with physical appearance, and using physical appearance to draw attention to oneself
  • Easily influenced by other people
  • Excessively dramatic, with exaggerated displays of emotion
  • Tends to believe that relationships are more intimate than they actually are.

Furthermore, when HPD is diagnosed in a child or teen, the symptoms must be present for at least one year.

Read “Teen Drama vs. Histrionic Personality Disorder.”

Narcissistic Personality Disorder

Narcissistic Personality Disorder affects around 6 percent of people nationwide, but is more prevalent in younger people. This disorder affects more males than females, and often begins in the teens or early adulthood. Consequently, a major National Institute of Health study found that 9.4 percent of Americans in their early twenties experienced episodes of Narcissistic Personality Disorder.

Narcissistic Personality Disorder is an extreme version of narcissism. Moreover, it is one of the more difficult personality disorders to diagnose, because the symptomology can be mistaken for other mental health conditions or simply difficult personality traits. Narcissistic tendencies include having grandiose ideas about oneself and one’s achievements. Therefore, narcissists seek excessive admiration from other people and society as a whole. Furthermore, they become fixated on external success and control.

Additionally, narcissists tend to lack the ability to empathize. Thus, they do not feel compassion for or identify with other people. Narcissists tend to have denigrating, dismissive attitudes toward other people. Consequently, the symptoms of Narcissistic Personality Disorder often disrupt personal or professional relationships. However, such narcissistic behaviors tend to hide feelings of low self-esteem and fear of personal inadequacy.

Newport Academy Mental Health Resources: teenage personality disorder

Dissociative Identity Disorder

Dissociative Identity Disorder is the correct medical terminology for what used to be known as multiple personality disorder. Hence, Dissociative Identity Disorder (DID) is a diagnosis indicating that a person has two or more distinct personality states.

Those with DID are often struggling with deep trauma, sometimes as a result of abuse. Hence, they dissociate as a coping mechanism to protect themselves from the pain and fear associated with the trauma.

DID personality states may appear on the surface to be different personalities. They may have different names, mannerisms, voices, and preferences. Therapists and survivors of DID sometimes call these different identities “alternate personalities,” “alters,” “ego states,” or “states of consciousness.”

Borderline Personality Disorder

The DSM-5 defines Borderline Personality Disorder (BPD) as a pattern of instability in self-perception and relationships. Some of the most common symptoms of the disorder include the following:

  • Unstable sense of self
  • Focus on abandonment or rejection
  • Inappropriate anger
  • Belief that changes mean failure
  • Doesn’t like being alone
  • Self-harm or suicidal tendencies
  • Impulsive
  • Pattern of volatile and intense interpersonal relationships defined first by idealization then devaluation.

Borderline Personality Disorder can dramatically impact the teen years. Teens with BPD have a hard time connecting with others. Moreover, they can swing between emotional states very quickly. It’s common for teens diagnosed with BPD to also suffer from other mental health disorders. These might include anxietyeating disorders, substance abuse, and/or attachment disorder.

Avoidant Personality Disorder

Avoidant Personality Disorder (APD) is one of the Cluster C personality disorders. According to the National Institute of Mental Health, about 5.2 percent of the adult population in the United States suffers from avoidant personality disorder.

Symptoms of APD include oversensitivity to criticism or rejection, feelings of inferiority, and extreme shyness. Hence, people with this disorder avoid social activities and interpersonal contact.

Although avoidant behavior typically starts in infancy or early childhood, many people who are shy tend to grow out of this behavior. On the contrary, people who develop Avoidant Personality Disorder become increasingly shy and reserved as they enter their teens. Typically, this disorder is not diagnosed in children or teens, as it may be difficult to tell the difference between APD and shyness, anxiety, social discomfort, or fear of strangers.

Read “Teen Avoidance Behavior: What It Is and How to Recognize It.”

Dependent Personality Disorder 

This disorder, another of the Cluster C disorders, involves excessive dependence on others. Adolescents with this teenage personality disorder display clingy behavior and fear of having to take care of themselves.

In addition, lack of self-confidence is another symptom of this disorder. Hence, teens with Dependent Personality Disorder require excessive advice and reassurance from others to make even small decisions. In addition, they have difficulty starting or completing projects on their own. And they are overly fearful of disapproval.

Obsessive-Compulsive Personality Disorder

Obsessive-Compulsive Personality Disorder is not the same as Obsessive-Compulsive Disorder (OCD). OCD is a type of anxiety disorder. The symptoms of Obsessive-Compulsive Personality Disorder include the following:

  • Preoccupation with neatness and rules
  • Extreme perfectionism
  • Need to be in control of people, tasks, and situations
  • Prioritizes work or a project over relationships and interpersonal connection
  • Rigid and inflexible about values and standards.
Newport Academy Mental Health Resources: teenage personality disorder

Treatment for a Teenage Personality Disorder

Specific therapeutic modalities have been shown to be effective for treating personality disorders. Cognitive Behavioral Therapy (CBT) is a proven treatment approach for many personality disorders. Hence, CBT helps young people learn to understand their disorder. Moreover, adolescents learn better ways to cope with a teenage personality disorder and its symptoms.

Furthermore, CBT groups offer opportunities to practice talking and interacting with others. This is important because personality disorders often affect relationships and social interactions.

Therefore, training in social skills is also helpful for teen personality disorders. Such training provides ways to manage symptoms and function better in relationships and daily life. In addition, family therapy provides support and education to families coping with a teenage personality disorder.

The Food and Drug Administration has not approved any medications specifically for personality disorders. However, psychiatrists and doctors sometimes prescribe medications for co-occurring disorders, such as anxiety disorders or depression.

In conclusion, treatment for a teenage personality disorder can help an adolescent live a healthier, more balanced life. However, prompt assessment and treatment are crucial.


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