TERM 1
Delusional Disorder Diagnostic
Criteria
DEFINITION 1
A. The presence of 1 or more delusio ns with a duration of 1 month
or longer.B. Criterion A for schizophren ia has never been met.C.
Apart from the delusions or its ramifica tions, functioning is not
markedly impaired, and behavior is no t obviously bizarre or odd.D.
If manic ormajor depressive episodes h ave occurred, these have
been brief relative to the duration of the delusional periods.E. The
disturbance is not attributable to the physiological effects of a
substance or another medical condit ion and is not better explained
by another mental disorder.
TERM 2
Delusional Disorder Prevalence
DEFINITION 2
The lifetime prevalence of delusional disorder has been
estimated at 0.2%, and the most frequent subtype is
persecutory. Delusional disorder, jealous type, is probably
more common in males than females, but there are no major
gender differences in the overall frequency of delusional
disorder.
TERM 3
Delusional Disorder Culture-Related
Diagnostic Issues
DEFINITION 3
An individual's cultural and religious background must be
taken into account in evaluating the possible presence of
delusional disorder. The content of the delusions also varies
across cultural contexts.
TERM 4
Schizophrenia Diagnostic
Criteria
DEFINITION 4
A. 2 or more of the following, each present for a significant portion of time during
a 1-month period (or less if successfully treat ed). At least one of these must be 1,
2, or 3:
Delusions
Hallucinations
Disorganized speech
Grossly disorganized or catatonic behavior
Negative symptoms
B. For a significant portion of time since the onset of the disturbance, level of
functioning in 1 or more major areas is mark edly below the level achieved prior
to the onset.C. Continuous signs of disturba nce persist for at least 6 months and
must include at least 1 month of symptoms .D. Schizoaffective disorder and
depressive or biplor disorder with psychotic fe atures have been ruled out.E. The
disturbance is not attibutal to the physiologica l effects of a substance or other
medical conditionF. If there is history of auris m spectrum disorder or a
communication disorder of a childhood onse t, the additional diagnosis of
schizophrenia is made only if prominent del usions or hallucinations are also
present for 1 month.
TERM 5
Schizophrenia Diagnostic
Features
DEFINITION 5
The characteristic symptoms of schizophreni a involve a range of cognitive,
behavioral, and emotional dysfunctions, but n o single symptom is pathognomonic
of the disorder. The diagnosis involves the re cognition of a constellation of signs
and symptoms associated with impaired occ upationsl or social functioning.
Individuals with the disorder will vary substan tially on most features, as
schizophrenia is a heterogeneous clinical sy ndrome. Mood symptoms and full
mood episodes are common in schizophren ia and may be concurrent with active
phase symptomology. However, as distinct from a psychotic mood disorder or
schizaffective disorder, a schizophrenia diagno sis requires the presence of
delusions and hallucinations in the absence of mood episodes.
