Personality Disorders

Source: Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5)

A personality disorder is an enduring pattern of inner experience and behavior that deviates markedly from the expectations of the individual's culture, is pervasive and inflexible, has an onset in adolescence or early adulthood, is stable over time and leads to distress or impairment.

Paranoid personality disorder
is a pattern of distrust and suspiciousness such that others' motives are interpreted as malevolent.

Schizoid personality disorder is a pattern of detachment from social relationships and a restricted range or emotional expression. 

Schizotypal personality disorder is a pattern of acute discomfort in close relationships, cognitive or perceptual distortions and eccentricities of behavior.