Action-Induced Clonus Mimicking Tremor
Identifieur interne : 003988 ( Main/Merge ); précédent : 003987; suivant : 003989Action-Induced Clonus Mimicking Tremor
Auteurs : Valérie Fraix [France] ; Isabelle Delalande [France] ; Marianne Parrache [France] ; Philippe Derambure [France] ; Francois Cassim [France]Source :
- Movement disorders [ 0885-3185 ] ; 2008.
Descripteurs français
- Pascal (Inist)
English descriptors
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Abstract
Action tremor has been described in cerebellar, task-specific, dystonic, or Holmes tremor. We report 2 patients who developed unilateral kinetic or isometric action tremor of the upper extremity, following cervical spondylotic myelopathy and capsular ischemic stroke. Slight motor weakness and spasticity with exaggerated tendon jerks and passive stretch-induced clonus were present on the same limb. The central motor pathways lesions might have been responsible for a hyperexcitability of the stretch-reflex arc and an enhancement of the coactivation of skeletal muscles through a loss of the descending or segmental control of the spinal reflexes. The unusual topography of the symptoms, their occurrence during motion, and the similar frequency of the passive clonus and the action tremor, led us to hypothesize that both patients had prolonged action-induced clonus, mimicking action tremor. Lesions of the central motor pathways lesions might be responsible for action tremor under certain conditions.
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Pascal:08-0133676Le document en format XML
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Hospital</s1><s2>Lille</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><settlement type="city">Lille</settlement></placeName></affiliation></author><author><name sortKey="Cassim, Francois" sort="Cassim, Francois" uniqKey="Cassim F" first="Francois" last="Cassim">Francois Cassim</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Department of Clinical Neurophysiology, Salengro Hospital, Lille University Hospital</s1><s2>Lille</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><settlement type="city">Lille</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Movement disorders</title><title level="j" type="abbreviated">Mov. disord.</title><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Action tremor</term><term>Differential diagnostic</term><term>Motor pathway</term><term>Nervous system diseases</term><term>Spasticity</term><term>Stretch reflex</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Hypertonie spastique</term><term>Pathologie du système nerveux</term><term>Tremblement attitude</term><term>Diagnostic différentiel</term><term>Réflexe étirement</term><term>Voie motrice</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Action tremor has been described in cerebellar, task-specific, dystonic, or Holmes tremor. We report 2 patients who developed unilateral kinetic or isometric action tremor of the upper extremity, following cervical spondylotic myelopathy and capsular ischemic stroke. Slight motor weakness and spasticity with exaggerated tendon jerks and passive stretch-induced clonus were present on the same limb. The central motor pathways lesions might have been responsible for a hyperexcitability of the stretch-reflex arc and an enhancement of the coactivation of skeletal muscles through a loss of the descending or segmental control of the spinal reflexes. The unusual topography of the symptoms, their occurrence during motion, and the similar frequency of the passive clonus and the action tremor, led us to hypothesize that both patients had prolonged action-induced clonus, mimicking action tremor. Lesions of the central motor pathways lesions might be responsible for action tremor under certain conditions.</div></front></TEI><affiliations><list><country><li>France</li></country><settlement><li>Grenoble</li><li>Lens (Pas-de-Calais)</li><li>Lille</li></settlement></list><tree><country name="France"><noRegion><name sortKey="Fraix, Valerie" sort="Fraix, Valerie" uniqKey="Fraix V" first="Valérie" last="Fraix">Valérie Fraix</name></noRegion><name sortKey="Cassim, Francois" sort="Cassim, Francois" uniqKey="Cassim F" first="Francois" last="Cassim">Francois Cassim</name><name sortKey="Delalande, Isabelle" sort="Delalande, Isabelle" uniqKey="Delalande I" first="Isabelle" last="Delalande">Isabelle Delalande</name><name sortKey="Derambure, Philippe" sort="Derambure, Philippe" uniqKey="Derambure P" first="Philippe" last="Derambure">Philippe Derambure</name><name sortKey="Fraix, Valerie" sort="Fraix, Valerie" uniqKey="Fraix V" first="Valérie" last="Fraix">Valérie Fraix</name><name sortKey="Fraix, Valerie" sort="Fraix, Valerie" uniqKey="Fraix V" first="Valérie" last="Fraix">Valérie Fraix</name><name sortKey="Parrache, Marianne" sort="Parrache, Marianne" uniqKey="Parrache M" first="Marianne" last="Parrache">Marianne Parrache</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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