Table of Contents

F20 : Schizophrenia

F20.0 Paranoid Schizophrenia

Either at least one of the syndromes, symptoms and signs listed under (1) below or at least two of the symptoms and signs listed under (2) should be present for most of the time during an episode of psychotic illness lasting for at least 1 month (or at some time during most of the days)

(1) At least one of the following must be present:

a) thought echo, thought insertion or withdrawal, or thought broadcasting;

b) delusions of control, influence or passivity, clearly referred to body or limb movements or specific thoughts, actions or sensations; delusional perception

c) hallucinatory voices giving a running commentary on the patient's behaviour, or discussing the patient between themselves, or other types of hallucinatory voices coming from some part of the body

d) persistent delusions of other kinds that are culturally inappropriate and completely impossible (e.g. being able to control the weather, or being in communication with beings from another world)

(2) Or at least two of the following:

a) persistent hallucinations in any modality, when occurring every day for at least 1 month, when accompanied by delusions (which may be fleeting or half-formed) without clear affective content, or when accompanied by persistent overvalued ideas

b) neologisms, breaks or interpolations in the train of thought, resulting in incoherence or irrelevant speech

c) catatonic behaviour, such as excitement, posturing or waxy flexibility, negativism, mutism and stupor

d) 'negative' symptoms, such as marked apathy, paucity of speech and blunting or incongruity of emotional response