| F21.0 SCHIZOTYPAL DISORDER | |||
General Description A disorder characterized by eccentric behaviour and anomalies of thinking and affect which resemble those seen in schizophrenia, though no definite and characteristic schizophrenic anomalies have occurred at any stage. |
Prospect, Duration The disorder runs a chronic course with fluctuations of intensity. Occasionally it evolves into overt schizophrenia. There is no definite onset and its evolution and course are usually those of a personality disorder. It is more common in individuals related to schizophrenics and is believed to be part of the genetic "spectrum" of schizophrenia. |
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Examples
There is no dominant or typical disturbance, but any of the following may be present: (a) inappropriate or constricted affect (the individual appears cold and aloof); (b) behaviour or appearance that is odd, eccentric, or peculiar; (c) poor rapport with others and a tendency to social withdrawal; (d) odd beliefs or magical thinking, influencing behaviour and inconsistent with subcultural norms; (e) suspiciousness or paranoid ideas; (f) obsessive ruminations without inner resistance, often with dysmorphophobic, sexual or aggressive contents; (g) unusual perceptual experiences including somatosensory (bodily) or other illusions, depersonalization or derealization; (h) vague, circumstantial, metaphorical, overelaborate, or stereotyped thinking, manifested by odd speech or in other ways, without gross incoherence; (i) occasional transient quasi-psychotic episodes with intense illusions, auditory or other hallucinations, and delusion-like ideas, usually occurring without external provocation. |
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