myokymia

(redirected from Morvan chorea)

myokymia

 [mi″o-ki´me-ah]
a benign condition in which there is persistent quivering of the muscles.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

my·o·ky·mi·a

(mī'ō-kī'mē-ă), [MIM*160100]
Continuous involuntary quivering or rippling of muscles at rest, caused by spontaneous, repetitive firing of groups of motor unit potentials.
[myo- + G. kyma, wave]
Farlex Partner Medical Dictionary © Farlex 2012

my·o·ky·mi·a

(mī'ō-kī'mē-ă)
Continuous involuntary quivering or rippling of muscles at rest, caused by spontaneous, repetitive firing of groups of motor unit potentials.
Synonym(s): kymatism, Morvan chorea.
[myo- + G. kyma, wave]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

myokymia

One of a range of conditions featuring involuntary, fine, twitching or rippling of muscle fibres. The common eyelid twitch, or fasciculation, is an example of myokymia.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Morvan,

Augustin Marie, French physician, 1819-1897.
Morvan chorea - continuous involuntary quivering of muscles at rest. Synonym(s): myokymia
Morvan disease - the presence of longitudinal cavities in the spinal cord. Synonym(s): Morvan syndrome; syringomyelia
Morvan syndrome - Synonym(s): Morvan disease
Medical Eponyms © Farlex 2012

myokymia

Twitching of a few bundles of fibres of the eyelid muscle. It occurs most commonly when fatigued, sometimes on exposure to cold, and in some pathological cases (e.g. multiple sclerosis) in which case the entire muscle is involved. Superior oblique myokymia can often be diagnosed by noting fine torsional nystagmus of the affected eye on slit-lamp examination. In cases where no nystagmus is noted, a patient's history of monocular episodic oscillopsia, associated with vertical diplopia, may be sufficient to make a diagnosis. The use of carbamazepine or propranolol has been suggested as possible treatments in stopping the myokymia. See orbicularis muscle; multiple sclerosis.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann