The prevalence of U.S. adults aged 18 and older with personality disorders (PD) is 9.1%, or approximately 30 million individuals, based on diagnostic interview data from the National Comorbidity Study Replication.
A personality disorder is a way of thinking, feeling, and behaving that deviates from the expectations of the culture, causes distress or problems functioning and lasts over time.2 Some individuals with personality disorders may not recognize the problem and often have more than one personality disorder.
The majority of those people with a personality disorder never come into contact with a mental health professional, and those that do, usually do so in time of crisis or in the context of another mental disorder.