A comparison of visual hallucinations across disorders

Dudley, Robert, Aynsworth, Charlotte, Mosimann, U., Taylor, J-P., Smailes, David, Collerton, Daniel, McCarthy-Jones, S. and Urwyler, P. (2019) A comparison of visual hallucinations across disorders. Psychiatry Research, 272. pp. 86-92. ISSN 0165-1781

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Abstract

Research into hallucinations typically regards them as single sensory or unimodal experiences leading to a comparative neglect of co-occurring multi-sensory hallucinations (MSH). People with psychosis who have visual hallucinations (VH) report high rates of hallucinations in other senses (auditory, olfactory, tactile). However, it is not known if this is similar to other groups who report VH. Consequently, this study explored MSH in four different patient groups who all had current VH. Archival data from standardised assessments of visual hallucinations in people with psychosis (n = 22), eye disease (ED) (n = 82), Lewy body Dementia (LBD) (n = 41), and Parkinson's disease (PD) (n = 41) determined the presence of MSH. People with psychosis and visual hallucinations reported significantly higher rates of MSH (auditory, 73%; tactile, 82%; olfactory/gustatory hallucinations, 27%) than the LBD group (auditory, 21%; tactile, 28%; olfactory/gustatory, 6%), ED (auditory, 1%; tactile, 11%; olfactory/gustatory, 0%) and PD patients (auditory, 3%; tactile, 8%; olfactory/gustatory, 3%). Regardless of diagnostic grouping, participants with MSH reported greater conviction that the VH were real, and reported greater distress. People with psychosis with VH report high rates of MSH unlike groups of older adults with VH. These between group differences in MSH prevalence have implications for clinical practice and theory.

Item Type:	Article
Uncontrolled Keywords:	Visual hallucination, Psychosis, Dementia, Eye disease
Subjects:	C800 Psychology
Department:	Faculties > Health and Life Sciences > Psychology
Depositing User:	Elena Carlaw
Date Deposited:	18 Feb 2019 12:31
Last Modified:	10 Oct 2019 21:16
URI:	http://nrl.northumbria.ac.uk/id/eprint/38064

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