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Does seasonal variation affect hallucinations in PD? A longitudinal study

Identifieur interne : 004C35 ( Main/Merge ); précédent : 004C34; suivant : 004C36

Does seasonal variation affect hallucinations in PD? A longitudinal study

Auteurs : Christopher G. Goetz [États-Unis] ; John Michael Li [États-Unis] ; Joanne Wuu [États-Unis] ; Sue Leurgans [États-Unis]

Source :

Movement disorders [ 0885-3185 ] ; 2006.

RBID : Pascal:06-0352385

Descripteurs français

Pascal (Inist)
- Système nerveux pathologie, Hallucination, Parkinson maladie, Variation saisonnière, Chronobiologie.

English descriptors

KwdEn :
- Chronobiology, Hallucination, Nervous system diseases, Parkinson disease, Seasonal variation.

Abstract

The objective of this study was to examine the chronobiology of visual hallucinations in Parkinson's disease (PD) patients to test whether hallucinations are more severe during darker months (winter) than summer months. We extracted longitudinal data on the UPDRS Thought Disorder (TD) score, taken as part of regular patient management on sequential visits through a 1-year cycle in hallucinating PD patients. To reduce the confounding effects of medication adjustments, analysis was restricted to patients with a baseline evaluation that did not involve a medication change. The primary outcome was the seasonal change in hallucination severity, defined as a change in TD score or neuroleptic use. Using Wilcoxon rank-sum tests, we compared the exacerbation of hallucination by season, focusing on winter (December through February) versus summer (June through August). A total of 51 hallucinating patients met entry criteria, and their longitudinal data were analyzed. There was no difference in hallucination severity with changing season; the level of wintertime exacerbation was no greater than summertime exacerbation (P = 0.42). Although hallucinations frequently develop in dimmed environments and evening hours, the darkness of wintertime does not exacerbate hallucinations in PD subjects on stable medications. Because we found no evidence of seasonal variations, we cannot recommend phototherapy or other strategies affecting chronobiological systems as research priorities to treat PD hallucinations.

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Pascal:06-0352385

Le document en format XML

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<front><div type="abstract" xml:lang="en">The objective of this study was to examine the chronobiology of visual hallucinations in Parkinson's disease (PD) patients to test whether hallucinations are more severe during darker months (winter) than summer months. We extracted longitudinal data on the UPDRS Thought Disorder (TD) score, taken as part of regular patient management on sequential visits through a 1-year cycle in hallucinating PD patients. To reduce the confounding effects of medication adjustments, analysis was restricted to patients with a baseline evaluation that did not involve a medication change. The primary outcome was the seasonal change in hallucination severity, defined as a change in TD score or neuroleptic use. Using Wilcoxon rank-sum tests, we compared the exacerbation of hallucination by season, focusing on winter (December through February) versus summer (June through August). A total of 51 hallucinating patients met entry criteria, and their longitudinal data were analyzed. There was no difference in hallucination severity with changing season; the level of wintertime exacerbation was no greater than summertime exacerbation (P = 0.42). Although hallucinations frequently develop in dimmed environments and evening hours, the darkness of wintertime does not exacerbate hallucinations in PD subjects on stable medications. Because we found no evidence of seasonal variations, we cannot recommend phototherapy or other strategies affecting chronobiological systems as research priorities to treat PD hallucinations.</div>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Does seasonal variation affect hallucinations in PD? A longitudinal study

Does seasonal variation affect hallucinations in PD? A longitudinal study

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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