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Logo of jnnpsycJournal of Neurology, Neurosurgery and PsychiatryCurrent TOCInstructions for authors
 
J Neurol Neurosurg Psychiatry. Aug 2005; 76(8): 1070–1074.
PMCID: PMC1739766
On the overlap between apathy and depression in dementia
S Starkstein, L Ingram, M Garau, and R Mizrahi
Raul Carrea Institute of Neurolgical Research, Buenos Aires, Argentina. ses/at/cyllene.uwa.edu.au
Abstract
Background: Whereas apathy is increasingly recognised as a frequent abnormal behaviour in dementia, its overlap with depression remains poorly understood.
Aims: To assess the psychometric characteristics of a structured interview for apathy, and to examine the overlap between apathy and depression in dementia.
Methods: A total of 150 patients with Alzheimer's disease (AD) underwent a comprehensive psychiatric and cognitive assessment.
Results: Twelve per cent of the sample met criteria for both apathy and depression, 7% met criteria for apathy only, and 31% met criteria for depression only. Apathy (but not depression) was significantly associated with more severe cognitive deficits. Apathy and anxiety scores accounted for 65% of the variance of depression scores in dementia, and the diagnosis of apathy had a minor impact on the rating of severity of depression.
Conclusions: The Structured Interview for Apathy demonstrated adequate psychometric characteristics. Using a novel structured interview for apathy in AD we demonstrated that whereas the construct of depression primarily consists of symptom clusters of apathy and anxiety, apathy is a behavioural dimension independent of depression.
Articles from Journal of Neurology, Neurosurgery, and Psychiatry are provided here courtesy of
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