Myoclonus of peripheral origin: Two case reports
Identifieur interne : 000E12 ( Istex/Curation ); précédent : 000E11; suivant : 000E13Myoclonus of peripheral origin: Two case reports
Auteurs : Louise Tyvaert [France] ; Pierre Krystkowiak [France] ; Francois Cassim [France] ; Elise Houdayer [France] ; Alexandre Kreisler [France] ; Alain Destée [France] ; Luc Defebvre [France]Source :
- Movement Disorders [ 0885-3185 ] ; 2009-01-30.
English descriptors
Abstract
The concept of peripheral myoclonus is not yet fully accepted by the medical community because of the difficulty in establishing a cause‐and‐effect relationship between trauma and subsequent movement disorders. Here, we report two cases of patients suffering from peripheral myoclonus after nerve injury. The first patient experienced myoclonus of the 4th dorsal interosseous muscle several days after trauma to the elbow. The second patient presented myoclonus of the arm stump (combined with phantom‐limb pain) 1 year after amputation. In both cases, central nervous system function (spine and brain imaging, somesthetic evoked potentials, EEG back‐averaging) was normal. For the second patient, local infiltration of xylocaine and botulinum toxin into the stump scar rapidly stopped myoclonus and pain. Nerve injury induces ephaptic transmission and ectopic excitation. The physiopathological mechanisms of this type of myoclonus involve a peripheral generator that induces central (spinal) generator activity. © 2008 Movement Disorder Society
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DOI: 10.1002/mds.21998
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Disord.</title><idno type="ISSN">0885-3185</idno><idno type="eISSN">1531-8257</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2009-01-30">2009-01-30</date><biblScope unit="vol">24</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="274">274</biblScope><biblScope unit="page" to="277">277</biblScope></imprint><idno type="ISSN">0885-3185</idno></series><idno type="istex">5080EA9C3532425C8D36639145DEADC853AA1DE2</idno><idno type="DOI">10.1002/mds.21998</idno><idno type="ArticleID">MDS21998</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0885-3185</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>nerve injury</term><term>peripheral myoclonus</term><term>phantom‐limb pain</term><term>spinal myoclonus</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The concept of peripheral myoclonus is not yet fully accepted by the medical community because of the difficulty in establishing a cause‐and‐effect relationship between trauma and subsequent movement disorders. Here, we report two cases of patients suffering from peripheral myoclonus after nerve injury. The first patient experienced myoclonus of the 4th dorsal interosseous muscle several days after trauma to the elbow. The second patient presented myoclonus of the arm stump (combined with phantom‐limb pain) 1 year after amputation. In both cases, central nervous system function (spine and brain imaging, somesthetic evoked potentials, EEG back‐averaging) was normal. For the second patient, local infiltration of xylocaine and botulinum toxin into the stump scar rapidly stopped myoclonus and pain. Nerve injury induces ephaptic transmission and ectopic excitation. The physiopathological mechanisms of this type of myoclonus involve a peripheral generator that induces central (spinal) generator activity. © 2008 Movement Disorder Society</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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