Specify current severity:
Severity is rated by a quantitative assessment of the primary symptoms of psychosis,
including delusions, hallucinations, disorganized speech, abnormal psychomotor be-
havior, and negative symptoms. Each of these symptoms may be rated for its current
severity (most severe in the last 7 days) on a 5-point scale ranging from 0 (not present)
to 4 (present and severe). (See Clinician-Rated Dimensions of Psychosis Symptom
Severity in the chapter “Assessment Measures.”)
Note:  Diagnosis of delusional disorder can be made without using this severity specifier.
Subtypes
In erotomanic type,  the central theme of the delusion is that another person is in love with
the individual. The person about whom this conviction is held is usually of higher status
(e.g., a famous individual or a superior at work) but can be a complete stranger. Efforts to
contact the object of the delusion are common. In grandiose type, the central theme of the de-
lusion is the conviction of having some great talent or insight or of having made some im-
portant discovery. Less commo nly, the individual may have  the delusion of having a
special relationship with a prominent individu al or of being a prominent person (in which
case the actual individual may be regarded as an impostor). Grandiose delusions may
have a religious content. In jealous type,  the central theme of the delusion is that of an un-
faithful partner. This belief is arrived at with out due cause and is based on incorrect infer-
ences supported by small bits of “evidence”  (e.g., disarrayed clothing). The individual
with the delusion usually conf ronts the spouse or lover and at tempts to intervene in the