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Involuntary painful muscle contractions in Satoyoshi syndrome: a surface electromyographic study.

Identifieur interne : 002C64 ( PubMed/Checkpoint ); précédent : 002C63; suivant : 002C65

Involuntary painful muscle contractions in Satoyoshi syndrome: a surface electromyographic study.

Auteurs : Gea Drost [Pays-Bas] ; Aad Verrips ; Baziel G M. Van Engelen ; Dick F. Stegeman ; Machiel J. Zwarts

Source :

Movement disorders : official journal of the Movement Disorder Society [ 0885-3185 ] ; 2006.

RBID : pubmed:16972238

English descriptors

KwdEn :
- Alopecia (pathology), Alopecia (physiopathology), Child, Electromyography, Female, Humans, Muscle Contraction (physiology), Muscle Spasticity (physiopathology), Neuromuscular Diseases, Pain (physiopathology), Pain Measurement, Syndrome.
MESH :
- pathology : Alopecia.
- physiology : Muscle Contraction.
- physiopathology : Alopecia, Muscle Spasticity, Pain.
- Child, Electromyography, Female, Humans, Neuromuscular Diseases, Pain Measurement, Syndrome.

Abstract

We report a child with Satoyoshi syndrome manifested by involuntary painful muscle contractions and alopecia. Although an autoimmune origin of Satoyoshi syndrome seems likely, its exact etiology remains as yet unknown, as is the origin of the involuntary contractions. To gain a better understanding of the electrophysiological characteristics of the involuntary contractions, we performed a surface electromyographic (EMG) study. We investigated muscle contractions in the legs using two noninvasive techniques: high-density surface EMG (HD-sEMG) recordings on one muscle, and polymyographic surface EMG (sEMG) recordings on various muscles. During the involuntary contractions, HD-sEMG showed a fourfold increase in amplitude compared to maximal voluntary contractions. These high potentials were widely distributed across the whole muscle and showed a pronounced oscillatory behavior with a frequency around 45 Hz. Polymyographic sEMG revealed that the involuntary contractions often occur simultaneously in various muscles or showed a switch of activity from one muscle to another. These findings point to hyperactivity or a disinhibition at the alpha motor neuron level, originating probably at that level, although a central origin cannot be excluded. (c) 2006 Movement Disorder Society.

DOI: 10.1002/mds.21088
PubMed: 16972238

Affiliations:

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Le document en format XML

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<author><name sortKey="Drost, Gea" sort="Drost, Gea" uniqKey="Drost G" first="Gea" last="Drost">Gea Drost</name>
<affiliation wicri:level="3"><nlm:affiliation>Department of Clinical Neurophysiology, Institute of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands. g.drost@neuro.umcn.nl</nlm:affiliation>
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<wicri:regionArea>Department of Clinical Neurophysiology, Institute of Neurology, Radboud University Nijmegen Medical Centre, Nijmegen</wicri:regionArea>
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<author><name sortKey="Van Engelen, Baziel G M" sort="Van Engelen, Baziel G M" uniqKey="Van Engelen B" first="Baziel G M" last="Van Engelen">Baziel G M. Van Engelen</name>
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<term>Female</term>
<term>Humans</term>
<term>Muscle Contraction (physiology)</term>
<term>Muscle Spasticity (physiopathology)</term>
<term>Neuromuscular Diseases</term>
<term>Pain (physiopathology)</term>
<term>Pain Measurement</term>
<term>Syndrome</term>
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<front><div type="abstract" xml:lang="en">We report a child with Satoyoshi syndrome manifested by involuntary painful muscle contractions and alopecia. Although an autoimmune origin of Satoyoshi syndrome seems likely, its exact etiology remains as yet unknown, as is the origin of the involuntary contractions. To gain a better understanding of the electrophysiological characteristics of the involuntary contractions, we performed a surface electromyographic (EMG) study. We investigated muscle contractions in the legs using two noninvasive techniques: high-density surface EMG (HD-sEMG) recordings on one muscle, and polymyographic surface EMG (sEMG) recordings on various muscles. During the involuntary contractions, HD-sEMG showed a fourfold increase in amplitude compared to maximal voluntary contractions. These high potentials were widely distributed across the whole muscle and showed a pronounced oscillatory behavior with a frequency around 45 Hz. Polymyographic sEMG revealed that the involuntary contractions often occur simultaneously in various muscles or showed a switch of activity from one muscle to another. These findings point to hyperactivity or a disinhibition at the alpha motor neuron level, originating probably at that level, although a central origin cannot be excluded. (c) 2006 Movement Disorder Society.</div>
</front>
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<ArticleTitle>Involuntary painful muscle contractions in Satoyoshi syndrome: a surface electromyographic study.</ArticleTitle>
<Pagination><MedlinePgn>2015-8</MedlinePgn>
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<Abstract><AbstractText>We report a child with Satoyoshi syndrome manifested by involuntary painful muscle contractions and alopecia. Although an autoimmune origin of Satoyoshi syndrome seems likely, its exact etiology remains as yet unknown, as is the origin of the involuntary contractions. To gain a better understanding of the electrophysiological characteristics of the involuntary contractions, we performed a surface electromyographic (EMG) study. We investigated muscle contractions in the legs using two noninvasive techniques: high-density surface EMG (HD-sEMG) recordings on one muscle, and polymyographic surface EMG (sEMG) recordings on various muscles. During the involuntary contractions, HD-sEMG showed a fourfold increase in amplitude compared to maximal voluntary contractions. These high potentials were widely distributed across the whole muscle and showed a pronounced oscillatory behavior with a frequency around 45 Hz. Polymyographic sEMG revealed that the involuntary contractions often occur simultaneously in various muscles or showed a switch of activity from one muscle to another. These findings point to hyperactivity or a disinhibition at the alpha motor neuron level, originating probably at that level, although a central origin cannot be excluded. (c) 2006 Movement Disorder Society.</AbstractText>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Involuntary painful muscle contractions in Satoyoshi syndrome: a surface electromyographic study.

Involuntary painful muscle contractions in Satoyoshi syndrome: a surface electromyographic study.

Source :

English descriptors

Abstract

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