Criterion E: Substance /
General Medical Condition
Exclusion
The disturbance is not due to the
direct effects of a substance
(e.g., drugs of abuse,
medication) or a general medical
condition
WPA
ICD 10 Criteria for
Schizophrenia: The Basics
• Characteristic symptoms for one
month
• If mood disorder is present, one
month of characteristic symptoms
must antedate it
• Not attributable to organic brain
disease or substance abuse
WPA
ICD 10: Characteristic
Symptoms
•At least one of the following:
Thought echo, insertion, withdrawal, or
broadcasting
Delusions of control, influence, or passivity;
delusional percept
Voices commenting or discussing; voices
coming from some part of the body
Persistent delusions that are culturally
inappropriate and completely impossible, such
as religious or political identity, superhuman
powers
WPA
ICD 10: Characteristic
Symptoms
•Or at least two of the following:
Persistent hallucinations in any modality
when accompanied by delusions
Neologisms, breaks or interpolations in
the train of thought, resulting in
incoherence or irrelevant speech
Catatonic behavior
“Negative” symptoms such as marked
apathy, paucity of speech, and blunting
or incongruity of emotional responses
WPA
Similarities Between ICD
and DSM
• Both require one month of active
symptoms
• Both include references to
negative symptoms
• Both require presence of
delusions and hallucinations for
a diagnosis of schizophrenia
WPA
Differences Between ICD
and DSM
• Characteristic symptoms (more
emphasis on FRS in ICD)
• Overall duration of symptoms
(one month for ICD vs. six
months for DSM)
• More specific and complex
symptom list in ICD
• Inclusion of Schizotypal Disorder
and Simple Schizophrenia in ICD
WPA
ICD 10: Types of
Schizophrenia
•
•
•
•
•
•
Paranoid
Hebephrenic
Catatonic
Undifferentiated
Post-schizophrenic depression
Simple schizophrenia
WPA
ICD 10: Categories of
Psychosis
•
•
•
•
Schizophrenia
Schizotypal Disorder
Persistent Delusional Disorders
Acute and Transient Psychotic
Disorders
• Induced Delusional Disorder
• Schizoaffective Disorders
• Other Nonorganic Psychotic
Disorders
WPA
DSM IV: Subtypes
•
•
•
•
•
Paranoid
Disorganized
Catatonic
Undifferentiated
Residual
WPA
DSM IV: Categories of
Psychosis
•
•
•
•
•
•
•
Schizophreniform Disorder
Schizophrenia
Brief Psychotic Disorder
Schizoaffective Disorder
Delusional Disorder
Shared Psychotic Disorder
Psychotic Disorder due to a General Medical
Condition
• Substance-Induced Psychotic Disorder
• Psychotic Disorder Not Otherwise
WPA
Specified
Differential Diagnosis
• Mood Disorders
• Nonpsychotic personality
disorders
• Substance-induced psychotic
disorders
• Psychotic disorders due to a
general medical condition (i.e.,
“organic” disorders)
WPA
Drugs That May Induce
Psychosis
•
•
•
•
Amphetamines
Marijuana
Hallucinogens
Cocaine
WPA