The DSM critera for schizotypal personality disorder are:

•  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 behaviour, beginning by early adulthood and present in a variety of contexts
  • Ideas of reference
  • Odd beliefs or magical thinking that influences behaviour and is inconsistent with subcultural norms
  • Unusual perceptual experiences, including bodily illusions
  • Odd thinking and speech
  • Suspiciousness or paranoid ideation
  • Inappropriate or constricted affect
  • Behaviour or appearance that is odd, eccentric, or peculiar
  • Lack of close friends or confidants other than first-degree relatives
  • Excessive social anxiety that does not diminish with familiarity and tends to be associated with paranoid fears
• Does not occur exclusively during the course of another disorder or medical condition