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EMG: Weakness/Numbness in Limbs & Diabetic Neuropathy

EMG: Weakness/Numbness in Limbs & Diabetic Neuropathy

Used to aid in the diagnosis of problems resulting in numbness, weakness, and certain types of pain.

What is an EMG?
Electromyography (EMG) measures and records the electrical activity that muscles generate at rest and in response to muscle contraction. This study aids in diagnosing the source of pain, cramping, or weakness in the muscles.

What should I do to prepare for the procedure?
Wear clothing that allows for easy access to the affected area if possible. Shower the day of your test, and do not use any creams, moisturizers, or powders on your skin. Avoid aspirin, aspirin-containing products, or anti-inflammatory drugs (e.g., ibuprofen) for one week before the EMG if possible. (Consult your physician prior to stopping any medications.)

What can I expect to happen during the procedure?
The doctor inserts a small needle electrode into a muscle at rest and moves the needle in the muscle. The needle is connected by a wire to a computer. Needle movement and muscle contraction produce a waveform analyzed by your physician. The test is repeated on several different muscles.

How Long Will It Take?
The procedure takes about 30-90 minutes. This will vary depending on the number of nerves and muscles that need to be tested.

Will It Hurt?
You may have pain when the electrodes are inserted, which feels like an injection into the muscle. After the test, you may have muscle aches and discomfort for several days. Warm compresses and over the counter pain medication can help.

What should I do after the procedure?
You may resume your normal activities immediately. Resume any medication you stopped before
the test.

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April 29, 2014