DefinitionBy Mayo Clinic staff
A personality disorder is a type of mental illness in which you have trouble perceiving and relating to situations and to people — including yourself. There are many specific types of personality disorders.
In general, having a personality disorder means you have a rigid and unhealthy pattern of thinking and behaving no matter what the situation. This leads to significant problems and limitations in relationships, social encounters, work and school.
In some cases, you may not realize that you have a personality disorder because your way of thinking and behaving seems natural to you, and you may blame others for the challenges you face.
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