| Schizophrenia (F20): diagnostic criteria for research At least one... |
| (a) thought echo, insertion, withdrawal or broadcasting |
| (b) delusions of control, influence or passivity |
| (c) hallucinatory voices - running commentary or discussing the patient |
| (d) persistent delusions - culturally inappropriate and completely impossible |
| Or at least two... |
| (a) persistent hallucinations in any modality, when accompanied by delusions |
| (b) neologisms, breaks or interpolations in the train of thought, incoherence |
| (c) catatonic behaviour |
| (d) 'negative' symptoms: apathy, paucity of speech, emotional blunting or incongruity |
|
...should be present for most of the time during an episode of psychotic illness lasting for at least 1 month Pattern of course (period of observation at least 1 year) |
| Continuous (no remission of psychotic symptoms) |
| Episodic with progressive deficit ('negative' symptoms in the intervals) |
| Episodic with stable deficit (persistent but non-progressive 'negative' symptoms) |
| Episodic remittent (complete remissions between psychotic episodes) |
| Incomplete remission |
| Complete remission |
| Other Course uncertain, period of observation too short |
| Clinical subtypes |
| Paranoid |
| Hebephrenic |
| Catatonic |
| Undifferentiated |
| Post-schizophrenic depression |
| Residual |
| Simple |
| Other |
| Unspecified |
| Other F2 disorders |
| Schizotypal disorder (F21) |
| Persistent delusional disorders (F22) |
| Acute and transient psychotic disorders (F23) |
| Induced delusional disorder (F24) |
| Schizoaffective disorders (F25) |
| Other non-organic psychotic disorders (F28) |
| Unspecified non-organic psychosis (F29) |
