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Diagnostic Testing

Pain diagnosis is an important component of chronic pain treatment. Neurologists are diagnostic specialists. Once a pain problem has been diagnosed, Dr. Friedman provides caring, individualized treatment to the patient.

EMG & Nerve Conduction Tests

EMG - Electromyography

Electromyography, or EMG, is used to diagnose nerve and muscle dysfunction and spinal cord disease. It records the electrical activity from the brain and/or spinal cord to a peripheral nerve root (found in the arms and legs) that controls muscles during contraction and at rest.

EMG and Nerve Conduction Studies consist of nerve tests and muscle tests which help the doctor determine how the nerves and muscles are functioning. This can diagnose nerve damage, pinched nerves, neuropathy, nerve pain, muscle spasm, and back and neck problems. These tests can be critical to the diagnosis of a chronic pain or neuromuscular condition.

The test should be performed by or supervised by a physician who has special training in diseases of the peripheral nerves and muscles. The electrical conducting properties of the nerves are measured and it is determined whether the nerves are healthy, pinched in a certain location, or diffusely affected by disease. Information about how the muscles work also shows if the nerves sending messages to those muscles are healthy or damaged.

During an EMG, very fine wire electrodes are inserted into a muscle to assess changes in electrical voltage that occur during movement and when the muscle is at rest. The electrodes are attached through a series of wires to a recording instrument. Testing usually takes place at a testing facility and lasts about 20-40 minutes, depending on the number of muscles and nerves to be tested. Most patients find this test to be somewhat uncomfortable.

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