Whether EMG tests are painful is a topic of some discussion. Studies find that people expect EMG tests to be more painful than they actually are. In reality, while an EMG test does involve needles and some discomfort, most patients find it easy to tolerate. The EMG electrode is about the size of an acupuncture needle, so it’s hair-like and goes under the skin easily. Plus, to help with EMG testing of hand and foot muscles, doctors apply a freezing spray to the area to lessen discomfort. Don’t let fear of pain stop you from getting a test that can help doctors diagnose and treat you. Here’s how an EMG test works:
You’ll sit or lie comfortably while your provider puts a very thin needle with an electrode into your muscle. It may sting and be a bit uncomfortable.
After measuring your muscle at rest, your provider may ask you to move the muscle, such as bending your arm.
The electrode measures your muscle’s electrical activity. A machine records this activity and shows it on a monitor. You will also “hear” your muscles, meaning that you hear the echo of waves being sent through that muscle.
If you need the test in more than one muscle, your provider will take the electrode out and repeat the process.