Lookup NU author(s): Dr Clive Ballard,
Professor Ian McKeith,
Professor John O'Brien,
Emeritus Professor Robert Perry
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Visual hallucinations (VH) are a core feature of dementia with Lewy bodies (DLB), but little is known about their phenomenology. A total of 73 dementia patients (42 DLB, 30 Alzheimer's disease [AD], 1 undiagnosed) in contact with clinical services were assessed with a detailed standardized inventory. DLB was diagnosed according to the criteria of McKeith and colleagues, AD was diagnosed using the NINCDS-ADRDA criteria. Autopsy confirmation has been obtained when possible. VH were defined using the definition of Burns and colleagues. Detailed descriptions of hallucinatory experiences were recorded. Annual follow-up interviews were undertaken. The clinical diagnosis has been confirmed in 18 of the 19 cases that have come to autopsy. A total of 93% of DLB patients and 27% of AD patients experienced VH. DLB patients were significantly more likely to experience multiple VH that persisted over follow-up. They were significantly more likely to hear their VH speak but there were no significant differences in the other phenomenological characteristics including whether the hallucinations moved, the time of day that they were experienced, their size, the degree of insight, and whether they were complete. VH may be more likely to be multiple, to speak, and to be persistent in DLB patients. These characteristics could potentially aid accurate diagnosis.
Author(s): Mckeith I; Thompson P; Perry R; Lowery K; O'Brien J; Ballard C; Harrison R; Ince P
Publication type: Article
Publication status: Published
Journal: International Psychogeriatrics
Print publication date: 01/12/1997
ISSN (print): 10416102
ISSN (electronic): 1741-203X
Publisher: Cambridge University Press
PubMed id: 9549588
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