Myokymia consists of involuntary, fine, continuous, undulating contractions that spread across the affected striated muscle. [ http://www.ncbi.nlm.nih.gov/pubmed/21501741 ]
Term information
- SNOMEDCT_US:27678003
- UMLS:C0684219
Myokymia is characterized electrophysiologically by rhythmic or semi-rhythmic bursts of a single motor unit discharging several times a second at a rate of 3-8 Hz. These myokymic discharges are nonsynchronous in different muscles or even in the same muscle, with intervals of 100-200 milliseconds separating individual bursts. The spontaneous discharges are not initiated by voluntary movement, although they may increase with such activity.