In such cases, they may be diagnosed with mixed personality disorder.

In DSM-IV, this was referred to as “Personality Disorder Not Otherwise Specified (NOS).”

This terminology has been replaced in theDSM-5by “Other Specified Personality Disorder.”

Worried woman sitting on floor next to bed

valentinrussanov / Getty Images

Keep reading to learn more about the symptoms and types of mixed personality disorder.

Also, explore how the condition is diagnosed, the potential causes, and the available treatments.

They also displayed problems in areas like perspective-taking and emotional regulation.

Other symptoms can include distrust, controlling behaviors, fear of abandonment, and impulsivity.

Such traits often occur in other personality disorders.

Prevalence

Mixed personality disorder is one of the most commonly diagnosed personality disorders.

The DSM-5-TR recognizes 10 distinct personality disorders, which are arranged into three clusters.

If you or a loved one are in immediate danger, call 911.

For more mental health resources, see ourNational Helpline Database.

Click below to listen now.

Personality disorders also commonlyco-occur with other illnesses.

What Causes Mixed Personality Disorder?

Like other personality disorders, experts don’t understand all of the causes of mixed personality disorder.

However, there are believed to be causes that likely underlie more than one of these disorders.

Personality disorders are thought to be sparked by a combination of both genetic and environmental factors.

Some people may be predisposed to these disorders due to genetics and family history.

Professional support from a therapist combined with self-care can help people learn to manage their condition.

Have a Plan

Some traits can make it hard to take care of your health and home.

You might do well some of the time, only to have periods where you struggle to keep up.

2020;63(1):e63.

2015;45(4):195-199. doi:10.3928/00485713-20150401-08

Moini J, LoGalbo A, Ahangari R.Personality disorders.

In:Foundations of the Mind, Brain, and Behavioral Relationships.

Elsevier; 2024:333-352. doi:10.1016/B978-0-323-95975-9.00001-9

National Institute of Mental Health.Obsessive-compulsive disorder (OCD).

American Psychiatric Association (APA).Diagnostic and Statistical Manual of Mental Disorders.

5th ed, text revision.

Washington, D.C.; 2022.

2015;2(1):52-82. doi:10.5127/pr.036314