EMG: impaired neuromuscular transmission

What it means

An electromyographic finding associated with erratic or absent neuromuscular transmission with erratic, moment-to-moment changes in the shape of the motor unit potential (MUP).

Rare diseases that can present with this5

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