6A22ICD-11 MMS 2026-01
Schizotypal disorder
Description
Schizotypal disorder is characterised by an enduring pattern (i.e. characteristic of the person’s functioning over a period of at least several years) of eccentricities in behaviour, appearance and speech, accompanied by cognitive and perceptual distortions, unusual beliefs, and discomfort with— and often reduced capacity for— interpersonal relationships. Symptoms may include constricted or inappropriate affect and anhedonia. Paranoid ideas, ideas of reference, or other psychotic symptoms, including hallucinations in any modality, may occur, but are not of sufficient intensity or duration to meet the diagnostic requirements of schizophrenia, schizoaffective disorder, or delusional disorder. The symptoms cause distress or impairment in personal, family, social, educational, occupational or other important areas of functioning.
Index terms
- Schizotypal disorder
- Schizotypal personality disorder
- borderline schizophrenia
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- latent schizophrenia
- latent schizophrenia, unspecified state
- prepsychotic schizophrenia
- prodromal schizophrenia
- pseudoneurotic schizophrenia
- pseudopsychopathic schizophrenia
Inclusions
- Schizotypal personality disorder
Excludes
Exclusions from above levels
Sibling codes
6A20– Schizophrenia6A21– Schizoaffective disorder6A23– Acute and transient psychotic disorder6A24– Delusional disorder6A25– Symptomatic manifestations of primary psychotic disorders6A2Y– Other specified primary psychotic disorder6A2Z– Schizophrenia or other primary psychotic disorders, unspecified
Foundation entity
Schizotypal disorder – http://id.who.int/icd/entity/18178000
Allowed postcoordination axes
Part of: 06: Mental, behavioural or neurodevelopmental disorders