Question: What Are The Side Effects Of A EMG Test?

What happens if EMG is abnormal?

If your EMG shows abnormal electrical activity when a muscle contracts, then you may have a herniated disc or a nerve disorder, such as ALS or carpal tunnel syndrome.

Depending on your results, your doctor will talk to you about any additional tests or treatments that might be needed..

How do you feel after a EMG test?

An EMG usually takes 30 to 60 minutes. Afterward, you may be given a pain reliever if you have any soreness. After EMG testing, you may feel a tingling sensation for a couple of days. You may develop small bruises or swelling where the needle was inserted.

What are the signs of nerve damage?

The signs of nerve damage include the following:Numbness or tingling in the hands and feet.Feeling like you’re wearing a tight glove or sock.Muscle weakness, especially in your arms or legs.Regularly dropping objects that you’re holding.Sharp pains in your hands, arms, legs, or feet.More items…

Why do I need an EMG?

EMG results are often necessary to help diagnose or rule out a number of conditions such as: Muscle disorders, such as muscular dystrophy or polymyositis. Diseases affecting the connection between the nerve and the muscle, such as myasthenia gravis.

What does a normal EMG sound like?

The sound of positive sharp waves have been described as, like ‘claps of distant thunder’, and fibrillation potentials a higher pitched and shorter duration sound, like ‘rain on a tin roof’.

Can you eat or drink before an EMG?

Take your routine medications, unless advised not to. Do not smoke for 3 hours before the test. Do not eat or drink foods that contain caffeine (such as coffee, tea, cola, and chocolate) for 2 to 3 hours before the test. Wear loose-fitting clothing so your muscles and nerves can be tested.

How painful is an EMG test?

Some people ask “is an EMG test painful?” There are actually two parts to EMG testing and both may result in some discomfort, but they are usually well tolerated without any need for pain medication. In most cases, your doctor will perform both elements, but in some situations, only one or the other may be done.

What diseases can an EMG detect?

An EMG can be used to diagnose a wide variety of neuromuscular diseases, motor problems, nerve injuries, or degenerative conditions, such as:Amyotrophic lateral sclerosis (ALS)Carpal tunnel syndrome.Cervical spondylosis.Guillain-Barre syndrome.Lambert-Eaton syndrome.Muscular dystrophy.Myasthenia gravis.More items…

Can I drive home after EMG?

You may need to stay in the outpatient facility or hospital for a short period after your EMG. Your team will apply warm compresses to your injection sites to reduce pain. You will not be able to drive for about 24 hours if you had sedation because you will still be drowsy.

Does nerve damage show up on MRI?

MRI is sensitive to changes in cartilage and bone structure resulting from injury, disease, or aging. It can detect herniated discs, pinched nerves, spinal tumors, spinal cord compression, and fractures.

What are the side effects of a nerve conduction test?

What are the Risks and/or Side Effects?You can get an infection where the needle was inserted. Your doctor will talk with you about steps you can take to prevent infection.You may have bleeding at the place where the needle was inserted. If bleeding does not stop after the test, you should tell your doctor.

Why was my EMG so painful?

The Pain of an EMG. Pain is the most common complication of EMG2 causing some level of discomfort in all patients either from the nerve conduction portion or the needle examination. Most surveys find pain more common in the needle portion.

Can an EMG test make things worse?

Muscle pain from an EMG test gets worse or you have swelling, tenderness, or pus at any of the needle sites.

What does an abnormal EMG look like?

Abnormal EMG results can show up in two ways. First, the muscle may show electrical activity at rest. On the other hand, the muscle may show abnormal electrical activity during contraction. This shows up as an abnormal action potential pattern with changes in the size or shape of the wave.

What diseases does a nerve conduction test show?

Diseases or conditions that may be checked with NCV include:Guillain-Barré syndrome. … Carpal tunnel syndrome. … Charcot-Marie-Tooth disease. … Herniated disk disease. … Chronic inflammatory polyneuropathy and neuropathy. … Sciatic nerve problems.