Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands
BACKGROUND: The prevalence of dystonia varies worldwide. A prior report suggested a high prevalence of focal dystonia in the Faroese population, possibly reflecting a founder effect. During standardized neurological examination as part of an ongoing neuroepidemiologic study in the Faroe Islands, we...
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ftpubmed:oai:pubmedcentral.nih.gov:6702791 2023-05-15T16:10:28+02:00 Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands Kim, Christine Y. Petersen, Maria Skaalum Eliasen, Eina H. Defazio, Giovanni Greene, Paul Jinnah, Hyder A. Tijssen, Marina A.J. Louis, Elan D. 2019-08-20 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6702791/ https://doi.org/10.7916/tohm.v0.686 en eng Columbia University Libraries/Information Services http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6702791/ http://dx.doi.org/10.7916/tohm.v0.686 © 2019 Kim et al. https://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution–Noncommercial–No Derivatives License, which permits the user to copy, distribute, and transmit the work provided that the original authors and source are credited; that no commercial use is made of the work; and that the work is not altered or transformed. CC-BY-NC-ND Articles Text 2019 ftpubmed https://doi.org/10.7916/tohm.v0.686 2019-08-25T00:29:23Z BACKGROUND: The prevalence of dystonia varies worldwide. A prior report suggested a high prevalence of focal dystonia in the Faroese population, possibly reflecting a founder effect. During standardized neurological examination as part of an ongoing neuroepidemiologic study in the Faroe Islands, we noted an unusual phenomenon of thumb flexion during repetitive hand movements in a subset of subjects and sought to define its phenomenology. METHODS: We requested commentary from a panel of dystonia experts regarding the phenomenology of the movements. These experts reviewed the videotaped neurological examination. RESULTS: Among the experts, dystonia was the leading diagnosis. Alternate causes were considered, but deemed less likely. DISCUSSION: Diagnosis of dystonia requires careful clinical assessment and consideration of associated features. We report a novel form of dystonia, not previously described to our knowledge, in this isolated population. Further studies of dystonia prevalence in the Faroe Islands are merited to characterize its burden in this population and its specific clinical characteristics. Text Faroe Islands PubMed Central (PMC) Faroe Islands Thumb ENVELOPE(-64.259,-64.259,-65.247,-65.247) |
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Articles Kim, Christine Y. Petersen, Maria Skaalum Eliasen, Eina H. Defazio, Giovanni Greene, Paul Jinnah, Hyder A. Tijssen, Marina A.J. Louis, Elan D. Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
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Articles |
description |
BACKGROUND: The prevalence of dystonia varies worldwide. A prior report suggested a high prevalence of focal dystonia in the Faroese population, possibly reflecting a founder effect. During standardized neurological examination as part of an ongoing neuroepidemiologic study in the Faroe Islands, we noted an unusual phenomenon of thumb flexion during repetitive hand movements in a subset of subjects and sought to define its phenomenology. METHODS: We requested commentary from a panel of dystonia experts regarding the phenomenology of the movements. These experts reviewed the videotaped neurological examination. RESULTS: Among the experts, dystonia was the leading diagnosis. Alternate causes were considered, but deemed less likely. DISCUSSION: Diagnosis of dystonia requires careful clinical assessment and consideration of associated features. We report a novel form of dystonia, not previously described to our knowledge, in this isolated population. Further studies of dystonia prevalence in the Faroe Islands are merited to characterize its burden in this population and its specific clinical characteristics. |
format |
Text |
author |
Kim, Christine Y. Petersen, Maria Skaalum Eliasen, Eina H. Defazio, Giovanni Greene, Paul Jinnah, Hyder A. Tijssen, Marina A.J. Louis, Elan D. |
author_facet |
Kim, Christine Y. Petersen, Maria Skaalum Eliasen, Eina H. Defazio, Giovanni Greene, Paul Jinnah, Hyder A. Tijssen, Marina A.J. Louis, Elan D. |
author_sort |
Kim, Christine Y. |
title |
Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
title_short |
Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
title_full |
Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
title_fullStr |
Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
title_full_unstemmed |
Involuntary Thumb Flexion on Neurological Examination: An Unusual Form of Upper Limb Dystonia in the Faroe Islands |
title_sort |
involuntary thumb flexion on neurological examination: an unusual form of upper limb dystonia in the faroe islands |
publisher |
Columbia University Libraries/Information Services |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6702791/ https://doi.org/10.7916/tohm.v0.686 |
long_lat |
ENVELOPE(-64.259,-64.259,-65.247,-65.247) |
geographic |
Faroe Islands Thumb |
geographic_facet |
Faroe Islands Thumb |
genre |
Faroe Islands |
genre_facet |
Faroe Islands |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6702791/ http://dx.doi.org/10.7916/tohm.v0.686 |
op_rights |
© 2019 Kim et al. https://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution–Noncommercial–No Derivatives License, which permits the user to copy, distribute, and transmit the work provided that the original authors and source are credited; that no commercial use is made of the work; and that the work is not altered or transformed. |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.7916/tohm.v0.686 |
_version_ |
1765995650031288320 |