After an NCV, are you still supposed to feel the shocks afterward?

Question

I had an NCV (Nerve Conduction Velocity) and an EMG (Electromyography) done yesterday to test for CTS (carpal tunnel syndrome). The test turned out negative, but the shocks of electricity were extremely strong running about 10-12 on the pain scale through my right and left hands and forearms. Last night, about 8 hours after the test was finished, I have started feeling the electrical shocks at only certain points in my arms, hands, and wrists when they are stationary. When I read about the tests, none of the websites said anything about having any symptoms or aftershocks with the NCV. I wasn't dealing with this before the test.

Is it normal to still feel the shocks hours after the test, or could I possibly have nerve damage?

Answer 1

Electrical shock impulses from an NCV or use of a TENS unit can cause tingling, throbbing or shock impulse feelings. These electric shocks are foreign to the body, and your body remembers the feeling just like you see an afterimage sometimes when you stare at something for a while and then look at a white wall. These shock feelings should fade and go away. I have myself felt the aftershocks from NCV/EMG and use of a TENS unit for shoulder and back pain. This is not unusual and their is no reason to worry about it unless it persists for a long time. If it hasn't stopped after a week, see a physician.

Answer 2

Well, I'm not a neurologist and my experience with NCV testing is very limited, but I think I would give the people who did the test a call if you're having symptoms like that and ask them about it, it sounds at least serious enough to merit talking to an expert to make sure everything is OK.

Answer 3

EMG or NCV can light people up for days afterwards. The tests fire the nerves which can irritate already inflammed nerves. It should resolve itself but may take some time. Hang in there!