What is an EMG?

An EMG stands for Electromyogram, and this test is used to calculate the electrical activity of muscles. This testing is important to determine how quickly nerves are transmitting signals, as problems with nerve transmission can potentially lead to pain and numbness. An Electromyogram Test is often used to help diagnose certain neurology related diseases.

Here are some examples of symptoms that may lead to an EMG Testing:



•Muscle weakness

•Muscle pain or cramping

•Certain types of limb pain

EMGs can also be used to detect abnormal electrical activity of muscles that can occur in many diseases and conditions: including muscular dystrophy, inflammation of muscles, pinched nerves , peripheral nerve damage (damage to nerves in the arms and legs), amyotrophic lateral sclerosis (ALS), myasthenia gravis, disc herniation, and others. When the test is conducted, a neurologist or tech, will place electrodes on areas related to where the patient has been experiencing pain. An electrical current is transmitted from the electrodes, which may result in a spasm/twinge sensation. Following the exam, the neurologist will explain the results of the Electromyogram Test to the patient, and will be able to use those results to help determine the cause of symptoms.

At Texas Institute for Neurological Disorders, our neurologists are trained to properly diagnose and assess results from an EMG test. In addition, they can determine if an EMG test is needed based on symptoms experienced by patients. For more information about the diseases our neurologists treat, visit our Services & Speciality webpage.



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