EMG: myokymic discharges

What it means

The presence of spontaneous bursts of rapidly firing potentials that recur at regular intervals of 2-10 per second and are unaffected by voluntary effort. This is an electromyographic (EMG) finding.

Rare diseases that can present with this4

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category