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Criteria summarized from:
American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders, fourth edition. Washington, DC: American Psychiatric Association.

{the text that is in bold print are NOT symptoms associated with schizoid personality}


AVOIDANT PERSONALITY DISORDER

This disorder is characterized by a long-standing and complex pattern of feelings of inadequacy, extreme sensitivity to what other people think about them, and social inhibition. It typically manifests itself by early adulthood and includes a majority of the following symptoms:


SCHIZOTYPAL PERSONALITY DISORDER

A pervasive pattern of social and interpersonal deficits marked by acute discomfort with, and reduced capacity for, close relationships as well as by cognitive or perceptual distortions and eccentricities of behavior, beginning by early adulthood and present in a variety of contexts, as indicated by five (or more) of the following:


 PARANOID PERSONALITY DISORDER

A pervasive distrust and suspiciousness of others such that their motives are interpreted as malevolent, beginning by early adulthood and present in a variety of contexts, as indicated by four (or more) of the following:


A person who suffers from this disorder has labile interpersonal relationships characterized by instability. This pattern of interacting with others has persisted for years and is usually closely related to the person's self-image and early social interactions. The pattern is present in a variety of settings (e.g., not just at work or home) and often is accompanied by a similar lability (fluctuating back and forth, sometimes in a quick manner) in a person's affect, or feelings. Relationships and the person's affect may often be characterized as being shallow. A person with this disorder may also exhibit impulsive behaviors and exhibit a majority of the following symptoms:


 

A pervasive pattern of grandiosity (in fantasy or behavior), need for admiration, and lack of empathy, beginning by early adulthood and present in a variety of contexts, as indicated by five (or more) of the following:


This disorder is characterized by a long-standing pattern of a disregard for other people's rights, often crossing the line and violating those rights. This pattern of behavior has occurred since age 15 (although only adults 18 years or older can be diagnosed with this disorder) and consists by the presence of the majority of these symptoms: