A personality disorder is a condition in which personality traits are inflexible and cause severe problems in dealing with other people. These traits begin in the teenage or early adult years and remain for life. The passive-aggressive personality refers to people who express their aggression in a passive way.
A person with passive-aggressive personality disorder resists the demands of others. The individual is often unable to come out and refuse to do something. Instead, he or she will put things off, make excuses, or "forget" to do what is asked. These behaviors create many problems in the person's work and social lives.
The cause of passive-aggressive personality disorder is unknown.