Hallucinations in schizophrenia and Parkinson's disease: an analysis of sensory modalities involved and the repercussion on patients

P. M. Llorca (), B. Pereira (), Renaud Jardri (), I. Chereau-Boudet, G. Brousse, D. Misdrahi (), G. Fenelon, A. -M. Tronche, R. Schwan, C. Lançon (), A. Marques, M. Ulla, P. Derost, B. Debilly, F. Durif and I. Chazeron
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B. Pereira: University Institute for Intelligent Systems and Numerical Applications in Engineering - ULPGC - University of Las Palmas de Gran Canaria
Renaud Jardri: SCALab - Laboratoire Sciences Cognitives et Sciences Affectives - UMR 9193 - Université de Lille - CNRS - Centre National de la Recherche Scientifique
G. Brousse: Centre d'Ingéniérie Hydraulique - EDF - EDF
C. Lançon: SPMC - Santé Publique et maladies Chroniques : Qualité de vie Concepts, Usages et Limites, Déterminants - AMU - Aix Marseille Université - APHM - Assistance Publique - Hôpitaux de Marseille
F. Durif: Service Neurologie [CHU Clermont-Ferrand] - CHU Gabriel Montpied [Clermont-Ferrand] - CHU Clermont-Ferrand - MNDO - Pôle Médecine interne, Neurologie, Neurochirurgie, Ophtalmologie [CHU Clermont-Ferrand] - CHU Gabriel Montpied [Clermont-Ferrand] - CHU Clermont-Ferrand

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Abstract: Hallucinations have been described in various clinical populations, but they are neither disorder nor disease specific. In schizophrenia patients, hallucinations are hallmark symptoms and auditory ones are described as the more frequent. In Parkinson's disease, the descriptions of hallucination modalities are sparse, but the hallucinations do tend to have less negative consequences. Our study aims to explore the phenomenology of hallucinations in both hallucinating schizophrenia patients and Parkinson's disease patients using the Psycho-Sensory hAllucinations Scale (PSAS). The main objective is to describe the phenomena of these clinical symptoms in those two specific populations. Each hallucinatory sensory modality significantly differed between Parkinson's disease and schizophrenia patients. Auditory, olfactory/gustatory and cœnesthetic hallucinations were more frequent in schizophrenia than visual hallucinations. The guardian angel item, usually not explored in schizophrenia, was described by 46% of these patients. The combination of auditory and visual hallucinations was the most frequent for both Parkinson's disease and schizophrenia. The repercussion index summing characteristics of each hallucination (frequency, duration, negative aspects, conviction, impact, control and sound intensity) was always higher for schizophrenia. A broader view including widespread characteristics and interdisciplinary works must be encouraged to better understand the complexity of the process involved in hallucinations.

Keywords: Quality; of; Life (search for similar items in EconPapers)
Date: 2016-12-01
Note: View the original document on HAL open archive server: https://hal.science/hal-01482644v1
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Published in Scientific Reports, 2016, 6, pp.38152. ⟨10.1038/srep38152⟩

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Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-01482644

DOI: 10.1038/srep38152

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