Major Depressive Disorder with Psychotic Features May Lead to MisDiagnosis of Dementia: A Case Report and Review of the Literature
Identifieur interne : 000641 ( Pmc/Corpus ); précédent : 000640; suivant : 000642Major Depressive Disorder with Psychotic Features May Lead to MisDiagnosis of Dementia: A Case Report and Review of the Literature
Auteurs : Gerhardt S. Wagner ; Shawn M. Mcclintock ; Peter B. Rosenquist ; W Vaughn MccallSource :
- Journal of psychiatric practice [ 1527-4160 ] ; 2011.
Abstract
Major depressive disorder (MDD) with psychotic features is relatively frequent among patients with greater depressive symptom severity and is associated with a poorer course of illness and more functional impairment than MDD without psychotic features. Multiple studies have found that patients with psychotic mood disorders demonstrate significantly poorer cognitive performance in a variety of areas than those with nonpsychotic mood disorders. The Mini Mental State Examination (MMSE) and the Dementia Rating Scale (DRS-2) are widely used to measure cognitive functions in research on MDD with psychotic features. Established total raw score cut-offs of 24 on the MMSE and of 137 on the DRS-2 in published manuals suggest possible global cognitive impairment and dementia, respectively. Limited research is available on these suggested cut-offs for patients with MDD with psychotic features. We document the therapeutic benefit of electroconvulsive therapy (ECT), which is usually associated with short-term cognitive impairment, in a 68-year-old woman with psychotic depression whose MMSE and DRS-2 scores initially suggested possible global cognitive impairment and dementia. Over the course of four ECT treatments, this patient’s MMSE scores progressively increased. After the second ECT treatment, the patient no longer met criteria for global cognitive impairment. With each treatment, depression severity, measured by the 24-item Hamilton Rating Scale for Depression, improved sequentially. Thus, the suggested cut-off scores for the MMSE or DRS-2 in patients with MDD with psychotic features may in some cases produce false-positive indications of dementia.
Url:
DOI: 10.1097/01.pra.0000407968.57475.ab
PubMed: 22108402
PubMed Central: 3572511
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