myokymia

Continuous involuntary quivering or rippling of muscles at rest, caused by spontaneous, repetitive firing of groups of motor unit potentials. SYN: fibrillary chorea, Morvan chorea. [myo- + G. kyma, wave]
- facial m. m. that appears in the facial muscles, causing narrowing of the palpebral fissure and continuous undulation of the facial skin surface; the latter is referred to as “bag of worms” appearance and is best seen with reflected light; due to intrinsic brainstem lesion, such as a pontine glioma or multiple sclerosis.
- generalized m. widespread m., present in multiple limbs and often the face; of various causes, including Isaac syndrome, uremia, thyrotoxicosis and gold toxicity (gold-m. syndrome).
- hereditary m. [MIM*160100] a syndrome consisting of muscle contractions and night cramps; autosomal dominant inheritance.
- limb m. m. present in one or more limbs; various causes, one of the more common being prior plexus radiation.

* * *

n.
prominent quivering of a few muscle fibres, not associated with any other abnormal features. It is a benign condition. See also fasciculation.

* * *

myo·kym·ia (mi″o-kiґme-ə) [myo- + Gr. kyma wave] a benign condition marked by brief spontaneous tetanic contractions of motor units or groups of muscle fibers, usually adjacent groups of fibers contracting alternately. Called also myoclonia fibrillaris multiplex.

Medical dictionary. 2011.

Look at other dictionaries:

  • Myokymia — Classification and external resources DiseasesDB 31530 eMedicine neuro/235 …   Wikipedia

  • myokymia — /muy euh kim ee euh/, n. Pathol. twitching of individual segments of a muscle. [MYO + kymia, equiv. to Gk kym(a) something swollen + IA] * * * …   Universalium

  • myokymia — n. prominent quivering of a few muscle fibres, not associated with any other abnormal features. It is usually a benign condition. See also: fasciculation …   The new mediacal dictionary

  • myokymia — /muy euh kim ee euh/, n. Pathol. twitching of individual segments of a muscle. [MYO + kymia, equiv. to Gk kym(a) something swollen + IA] …   Useful english dictionary

  • Superior oblique myokymia — Infobox Disease Name = Superior oblique myokymia Caption = 6 = Superior oblique muscle DiseasesDB = ICD10 = ICD9 = ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = Superior oblique myokymia is a neurological disorder… …   Wikipedia

  • myoclonia fibrillaris multiplex — myokymia …   Medical dictionary

  • миокимия — (myokymia; мио + греч. kyma волна, волнение; син. псевдофасцикуляция) гиперкинез, характеризующийся постоянными или транзиторными сокращениями пучка мышечных волокон, не приводящими к перемещению сегмента конечности; обусловлен изменениями… …   Большой медицинский словарь

  • Миокими́я — (myokymia; Мио + греч. kyma волна, волнение; син. псевдофасцикуляция) гиперкинез, характеризующийся постоянными или транзиторными сокращениями пучка мышечных волокон, не приводящими к перемещению сегмента конечности; обусловлен изменениями… …   Медицинская энциклопедия

  • МИОКИМИЯ — (myokymia) заметное трепетание некоторых мышечных волокон при отсутствии любых других аномалий в организме человека. Данное состояние обычно является преходящим. См. также Фасцикуляции …   Толковый словарь по медицине

  • Episodic ataxia — (EA) is an autosomal dominant disorder characterized by sporadic bouts of ataxia (severe discoordination) with or without myokymia (continuous muscle movement). Ataxia can be provoked by stress, startle, or heavy exertion such as exercise.… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.