A nerve conduction velocity (NCV) test, also called a nerve conduction study (NCS), measures how fast an electrical impulse moves through your nerve. NCV can identify nerve damage. During the test, your nerve is stimulated, usually with electrode patches attached to your skin. Two electrodes are placed on the skin over the nerve. One electrode stimulates the nerve with a very mild electrical impulse and the other electrode records it. The resulting electrical activity is recorded by another electrode. This is repeated for each nerve being tested. It should not be painful but may cause minor discomfort. There will be no pain after the test is complete. The stimulation and nerve response will appear on a monitor for a doctor to record. A person may need to do an EMG test following the NCV test. EMG and nerve conduction studies are used to help diagnose a variety of muscle and nerve disorders. An EMG test helps find out if muscles are responding the right way to nerve signals. Nerve conduction studies help diagnose nerve damage or disease. If you suffer from a condition that causes nerve damage that is so severe that it impacts your ability to work for at least a year, you may be eligible to receive Social Security Disability benefits.
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