Visual hallucinations in the differential diagnosis of parkinsonism
Identifieur interne : 000023 ( Main/Exploration ); précédent : 000022; suivant : 000024Visual hallucinations in the differential diagnosis of parkinsonism
Auteurs : Kelly Bertram [Australie] ; David R. Williams [Australie]Source :
- Journal of Neurology, Neurosurgery & Psychiatry [ 0022-3050 ] ; 2012-04.
Abstract
Visual hallucinations (VH) occur commonly in Parkinson's disease (PD) and dementia with Lewy bodies (DLB) but are reported much less frequently in other neurodegenerative causes of parkinsonism, such as progressive supranuclear palsy, multiple system atrophy and corticobasal degeneration syndrome. This clinical sign may be helpful when considering the differential diagnosis of patients with parkinsonism. The observation that VH may be specific to Lewy body pathology probably reflects a greater vulnerability of the visual systems to PD and DLB neurodegeneration compared with other diseases. Topographic differences in pathology are probably the major factor producing VH in Lewy body diseases, rather than neurophysiological changes that are specific to α-synuclein protein accumulation. VH correlate with pathology in the limbic system and more specifically the amygdale that is frequently affected in PD and DLB but relatively preserved in other forms of parkinsonism often misdiagnosed as PD. In this review, the published frequencies of VH in these different conditions are compared to put into context the notion of VH as a clinical clue to underlying Lewy body pathology.
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DOI: 10.1136/jnnp-2011-300980
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Williams</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Neurology Department, Alfred Hospital, Melbourne, Victoria</wicri:regionArea><wicri:noRegion>Victoria</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>Van Cleef Roet Centre for Nervous Diseases, Monash University, Melbourne, Victoria</wicri:regionArea><wicri:noRegion>Victoria</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Australie</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Neurology, Neurosurgery & Psychiatry</title><title level="j" type="abbrev">J Neurol Neurosurg Psychiatry</title><idno type="ISSN">0022-3050</idno><idno type="eISSN">1468-330X</idno><imprint><publisher>BMJ Publishing Group Ltd</publisher><date type="published" when="2012-04">2012-04</date><biblScope unit="volume">83</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="448">448</biblScope></imprint><idno type="ISSN">0022-3050</idno></series><idno type="istex">40B29D1E7B695137A4BF5C76B6C19AE286D0C6D6</idno><idno type="DOI">10.1136/jnnp-2011-300980</idno><idno type="href">jnnp-83-448.pdf</idno><idno type="ArticleID">jnnp-2011-300980</idno><idno type="PMID">22228724</idno><idno type="local">jnnp;83/4/448</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-3050</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Visual hallucinations (VH) occur commonly in Parkinson's disease (PD) and dementia with Lewy bodies (DLB) but are reported much less frequently in other neurodegenerative causes of parkinsonism, such as progressive supranuclear palsy, multiple system atrophy and corticobasal degeneration syndrome. This clinical sign may be helpful when considering the differential diagnosis of patients with parkinsonism. The observation that VH may be specific to Lewy body pathology probably reflects a greater vulnerability of the visual systems to PD and DLB neurodegeneration compared with other diseases. Topographic differences in pathology are probably the major factor producing VH in Lewy body diseases, rather than neurophysiological changes that are specific to α-synuclein protein accumulation. VH correlate with pathology in the limbic system and more specifically the amygdale that is frequently affected in PD and DLB but relatively preserved in other forms of parkinsonism often misdiagnosed as PD. In this review, the published frequencies of VH in these different conditions are compared to put into context the notion of VH as a clinical clue to underlying Lewy body pathology.</div></front></TEI><affiliations><list><country><li>Australie</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Bertram, Kelly" sort="Bertram, Kelly" uniqKey="Bertram K" first="Kelly" last="Bertram">Kelly Bertram</name></noRegion><name sortKey="Williams, David R" sort="Williams, David R" uniqKey="Williams D" first="David R" last="Williams">David R. Williams</name><name sortKey="Williams, David R" sort="Williams, David R" uniqKey="Williams D" first="David R" last="Williams">David R. Williams</name><name sortKey="Williams, David R" sort="Williams, David R" uniqKey="Williams D" first="David R" last="Williams">David R. Williams</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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