Meaning of the word "personality disorder" in English

What does "personality disorder" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

personality disorder

US /ˌpɜːr.sənˈæl.ə.t̬i dɪsˈɔːr.dɚ/
UK /ˌpɜː.sənˈæl.ə.ti dɪsˈɔː.də/
"personality disorder" picture

Noun

a mental disorder characterized by deeply ingrained, inflexible patterns of thinking, feeling, and behaving that deviate markedly from the expectations of the individual's culture, causing distress or impairment in social, occupational, or other important areas of functioning

Example:
Borderline personality disorder is a complex mental health condition.
Treatment for personality disorders often involves psychotherapy.