Our patients tell us that the quality of their interactions, our attention to detail and the efficiency of their visits mean health care like they've never experienced. See the stories of satisfied Mayo Clinic patients. Janice Breien was anxious to find a better way to manage the seizures that regularly disrupted her daily life.
Enter her Mayo care team -- ready to listen and provide solutions. Now, with her seizures under control, Janice has a renewed sense of optimism. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Request an Appointment at Mayo Clinic. EEG electrodes Open pop-up dialog box Close. Fresh Approach to Epilepsy Treatment Rekindles Zest for Life Janice Breien was anxious to find a better way to manage the seizures that regularly disrupted her daily life.
Share on: Facebook Twitter. Show references Moeller J, et al. Electroencephalography EEG in the diagnosis of seizures and epilepsy. It's also a good idea to keep a list of the medicines you take. Ask your doctor when you can expect to have your test results.
Author: Healthwise Staff. Medical Review: E. Lindholm DO - Neurology. Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
It looks like your browser does not have JavaScript enabled. Please turn on JavaScript and try again. Important Phone Numbers. Topic Contents What is it? Why is this test done? How do you prepare for the test? How is the test done? How long does the test take? What are the risks of an electroencephalogram EEG? Once the test is completed, the electrodes will be removed and the electrode paste will be washed off with warm water, acetone, or witch hazel. In some cases, you may need to wash your hair again at home.
If you took any sedatives for the test, you may be required to rest until the sedatives have worn off. You will need to have someone drive you home. Skin irritation or redness may be present at the locations where the electrodes were placed, but this will wear off in a few hours. Your healthcare provider will inform you when you may resume any medicines you stopped taking before the test. Your healthcare provider may give you additional or alternate instructions after the procedure, depending on your particular situation.
Health Home Treatments, Tests and Therapies. Why might I need an EEG? There may be other reasons for your healthcare provider to recommend an EEG. What are the risks of an EEG? Certain factors or conditions may interfere with the reading of an EEG test.
These include: Low blood sugar hypoglycemia caused by fasting Body or eye movement during the tests but this will rarely, if ever, significantly interfere with the interpretation of the test Lights, especially bright or flashing ones Certain medicines, such as sedatives Drinks containing caffeine, such as coffee, cola, and tea while these drinks can occasionally alter the EEG results, this almost never interferes significantly with the interpretation of the test Oily hair or the presence of hair spray How do I get ready for an EEG?
Your healthcare provider will explain the procedure to you and you can ask questions. You will be asked to sign a consent form that gives your permission to do the procedure. Read the form carefully and ask questions if something is not clear. Wash your hair with shampoo, but do not use a conditioner the night before the test.
Do not use any hair care products, such as hairspray or gels. During the test, small sensors are attached to the scalp to pick up the electrical signals produced when brain cells send messages to each other.
These signals are recorded by a machine and are looked at by a doctor later to see if they're unusual. The EEG procedure is usually carried out by a highly trained specialist, called a clinical neurophysiologist, during a short visit to hospital. It may help identify the cause of certain symptoms — such as seizures fits or memory problems — or find out more about a condition you've already been diagnosed with.
The main use of an EEG is to detect and investigate epilepsy , a condition that causes repeated seizures. An EEG will help your doctor identify the type of epilepsy you have, what may be triggering your seizures and how best to treat you.
Less often, an EEG may be used to investigate other problems, such as dementia , head injuries , brain tumours , encephalitis brain inflammation and sleep disorders, such as obstructive sleep apnoea. Unless told otherwise, you can usually eat and drink beforehand and continue to take all your normal medication. To help the sensors stick to your scalp more easily, you should make sure your hair is clean and dry before arriving for your appointment, and avoid using products such as hair gel and wax.
You might want to bring a hairbrush or comb with you, as your hair may be a bit messy when the test is finished. Some people bring a hat to cover their hair until they can wash it at home afterwards.
There are several different ways an EEG recording can be taken.
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