Review: delusions in dementia.

  title={Review: delusions in dementia.},
  author={Robert James Harvey},
  journal={Age and ageing},
  volume={25 5},
  • R. Harvey
  • Published 1 September 1996
  • Psychology, Medicine
  • Age and ageing
Introduction The definition of a delusion is 'a false, unshakeable idea or belief . . . held with extraordinary conviction and subjective certainty' [1]. Delusions are a common symptom of a range of psychiatric illnesses including schizophrenia, depression, bipolar disorder and dementia. The inclusion of dementia in this list is sometimes surprising to both doctors and carers, who restrict the symptoms of dementia to the cognitive domain; yet Alzheimer's first description was of a 51year-old… 
Cognitive impairments may mimic delusions.
Cognitive neuroscience of delusions in aging
  • A. Holt, M. Albert
  • Psychology, Medicine
    Neuropsychiatric disease and treatment
  • 2006
It is proposed that delusions in the elderly reflect a common neuroanatomic and functional phenotype, and applications of this proposal to diagnosis and treatment are discussed.
Psychosis in Alzheimer's Disease: Prevalence, Clinical Characteristics, Symptom Co-Morbidity, and Aetiology
The purpose of this article is to review studies on psychosis in Alzheimer's disease, examine its prevalence, and discuss its manifestation with reference to the association between neuropathology and psychotic disturbances.
Phenotypic cognitive impairment in late-onset delusional disorder
A high rate of marked cognitive impairment occurs in late-onset delusional disorder, plus the presence of a visuo-perceptual impairment affecting object recognition, which can explain the genesis and maintenance of the observed delusions.
On the Neurophysiology of Delusional Disorders: Top-Bottom vs. Bottom-Up Theories
The psychopathology of delusions has been indelibly denoted from top-bottom theories, with a very long psychiatric tradition explaining the issue as a cortical derangement. The reverse face of the
Understanding the Delusion of Theft
The aim of this paper is to review the recent literature on the delusion of theft, the most prevalent delusion in the elderly, in order to arrive at a deeper understanding of its sources and to identify successful therapeutic approaches.
Pharmacotherapy of Behavioral and Psychological Symptoms of Dementia: Time for a Different Paradigm?
Behavioral and psychological symptoms of dementia can occur in 60–80% of patients with Alzheimer's disease or other dementing illnesses, and are important in that they are a source of significant
Is Dementia a Mental Illness?
  • S. Ticehurst
  • Psychology, Medicine
    The Australian and New Zealand journal of psychiatry
  • 2001
Dementia's departure from mental illness reflects psychiatry's continuing marginalization within medicine on an outdated mind/body or illness/disease split and suggests that the future of psychiatry will be in a completely different direction from its current biological focus.
Delusional symptomatology as seen by a community mental health outreach team
A feeling of being plotted against by others was the most common delusion and approximately half of the individuals in each group reported hallucinations, and non-compliance was viewed as the main barrier to effective intervention.
Delusions and underlying needs in older adults with Alzheimer's disease: influence of earlier life experiences and the current environment.
Understanding the influences of earlier life experiences and the current environment on delusions, as well as the underlying needs of older adults with AD who experience delusions, can facilitate planning for patient-centered care by enhancing health care providers' understanding of the psychosocial and environmental attributes and needs behind delusions.


Delusions in dementia syndromes: investigation of behavioral and neuropsychological correlates.
It is hypothesized that delusions are independent noncognitive manifestations of the neurobiology of AD and MID and that delusional patients are more behaviorally disturbed than those without delusions.
Psychiatric Phenomena in Alzheimer's Disease. I: Disorders of Thought Content
Cognitive function at entry to the study and cognitive deterioration over the succeeding 12 months was not influenced by the presence of disorders of thought content and subjects with other types of delusion had relatively well preserved lateral ventricular size and basal ganglia calcification.
Psychotic symptoms in patients with dementia
There is little consensus about which factors are of aetiological importance, although it does seem that those with a dementia of moderate severity have the highest prevalence.
Alzheimer's disease with delusions and hallucinations
It is demonstrated that AD patients with delusions and hallucinations have a greater degree of cerebral dysfunction and a relatively focal neuropsychological defect, which may indicate a localized pathologic abnormality.
Cognitive deficits of patients with Alzheimer's disease with and without delusions.
The presence of psychotic symptoms in Alzheimer's disease was associated with greater cognitive impairment, especially frontal/temporal dysfunction, and possibly with a more rapidly progressive dementia.
A SPECT study of delusions in Alzheimer's disease
Although there were no significant between-group differences in performance on neuropsychological tasks, AD patients with delusions had significantly lower mean cerebral blood flow in both the left and right temporal lobes.
Operational criteria for senile dementia of Lewy body type (SDLT)
Retrospective analysis of case notes of autopsy patients with neuropathologically proven senile dementia of Lewy body type (SDLT) and 37 cases with neuro Pathologically proven Alzheimer's disease identified a characteristic clinical syndrome in SDLT.
Neuroanatomical correlates of clinical misidentification and misperception in senile dementia of the Alzheimer type.
It is concluded that an accentuated degeneration of the right frontal lobe (and a relative preservation of the left frontal lobe) may be associated with delusional misidentification symptoms in DAT.
Clinical diagnosis of Alzheimer's disease
The criteria proposed are intended to serve as a guide for the diagnosis of probable, possible, and definite Alzheimer's disease; these criteria will be revised as more definitive information becomes available.
Clinical correlates of PET- and SPECT-identified defects in dementia.
  • H. Mayberg
  • Psychology, Biology
    The Journal of clinical psychiatry
  • 1994
Functional imaging studies in patients with dementia have focused primarily on the reliability of scan patterns to correctly diagnose specific diseases, particularly Alzheimer's disease, but a complementary approach is to examine the relationships between patterns of altered brain function and specific behaviors.