Psychology Wiki
Delusional disorder
ICD-10 F22
ICD-9 297.1
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Delusional disorder is a psychiatric diagnosis denoting a psychotic mental illness that involves holding one or more non-bizarre delusions in the absence of any other significant psychopathology (signs or symptoms of mental illness). In particular a person with delusional disorder has never met any other criteria for schizophrenia and does not have any marked hallucinations, although tactile (touch) or olfactory (smell) hallucinations may be present if they are related to the theme of the delusion.

A person with delusional disorder can be quite functional and does not tend to show any odd or bizarre behaviour except as a direct result of the delusional belief.

It is worth noting that the term paranoia was previously used in psychiatry to denote what is now called 'delusional disorder'. The modern psychiatric use of the word paranoia is subtly different but now rarely refers to this specific diagnosis.

Delusional disorder may typically be one of the following types:

  • Erotomanic Type (see erotomania): delusion that another person, usually of higher status, is in love with the individual.
  • Grandiose Type: delusion of inflated worth, power, knowledge, identity, or special relationship to a deity or famous person (e.g. see Jerusalem syndrome)
  • Jealous Type: delusion that the individual's sexual partner is unfaithful (see delusional jealousy).
  • Persecutory Type: delusion that the person (or someone to whom the person is close) is being malevolently treated in some way.
  • Somatic Type: delusions that the person has some physical defect or general medical condition (for example, see delusional parasitosis).

A diagnosis of 'mixed type' or 'unspecified type' may also be given if the delusions fall into several or none of these categories.

Delusional disorder: Description

  • symptoms
  • synonyms and related phrases

Main article: Delusional disorder: History of the disorder.
Main article: Delusional disorder:Theoretical approaches.
Main article: Delusional disorder:Epidemiology.
Main article: Delusional disorder:Risk factors.
Main article: Delusional disorder:Etiology.
Main article: Delusional disorder:Diagnosis & evaluation.
Main article: Delusional disorder:Comorbidity.
Main article: Delusional disorder:Treatment.
Main article: Delusional disorder:Prognosis.
Main article: Delusional disorder:Service user page.
Main article: Delusional disorder:Carer page.

Instructions_for_archiving_academic_and_professional_materials Delusional disorder: Academic support materials

  • Delusional disorder: Academic: Lecture slides
  • Delusional disorder: Academic: Lecture notes
  • Delusional disorder: Academic: Lecture handouts
  • Delusional disorder: Academic: Multimedia materials
  • Delusional disorder: Academic: Other academic support materials
  • Delusional disorder: Academic: Anonymous fictional case studies for training

Delusional disorder: For the practitioner

  • Delusional disorder: Practitioner: Further reading
  • Delusional disorder: Practitioner: Useful websites

Delusional disorder: Anonymous fictional case studies for training

See also

Further reading

  • Munro, A. (1999) Delusional disorder. Cambridge: Cambridge University Press. ISBN 052158180X
  • Sims, A. (1995) Symptoms in the mind: An introduction to descriptive psychopathology. Edinburgh: Elsevier Science Ltd. ISBN 0702026271

External links


Psychosis-this needs amending only example
Psychosis | Psychopathy  
Types of Psychotic Disorder
Schizophrenia | Paranoid schizophrenia | Schizotypal disorder  | Persistant delusional disorder | Induced delusional disorder | Schizoaffective disorders  | Disorganized schizophrenia | Schizotypy |
Assessing Psychosis
Psychological tests | Functional assessment | Early detection |Assessment issues |Schizophrenia - Evaluation protocols |
Treating Psychosis
Early intervention | CBT |Relapse prevention | Psychotherapy |Medication |Family therapy | Rehabilitation | Continuing care |