It is natural to have soreness or numbness in a muscle once in a while. You might strain a wrist muscle lifting something heavy, for example.
For many people, though, a sore wrist is caused by an injured nerve, not an injured muscle. When it is not clear why you are having problems with your wrist, back, legs, or other body part, one or both of these tests may be helpful.
The tests may be given to people who have the following symptoms that don't go away:
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Both tests EMG and NCS are helpful in diagnosing:
NCS can also help your doctor see how well you are recovering from a nerve injury. WDC offers these test to patients of peripheral neuropathy with diabetes to differentiate from other causes.