An EEG is a test that records your brain’s electrical signals. This helps your doctor understand what might be causing your symptoms. The test is carried out by a trained Clinical Physiologist.

How if the test carried out?

Please make sure your hair is clean on the day of the test. Do not use hair gel, spray, oils, lacquer or any other hair products.

Please bring toys or electronic devices to help distract your child, along with a snack and/or drink.

Younger children can sit on a parent’s or carer’s knee during the test.

Small metal discs called electrodes are placed on your scalp using a washable paste. You will be asked to relax and keep your eyes closed, if you are able to.

A video recording of the test may be taken if you agree. This can help the healthcare professionals involved in your care and treatment understand your condition better.

During the test, you may be asked to:

• Open and close your eyes
• Rest or try to fall asleep for a short time
• Breathe deeply for up to three minutes
• Look at a flashing light for a short period

When the test is finished, the electrodes are removed with water. Staff will then clean off as much of the paste as possible before you leave and any leftover should wash out easily.

Will it hurt?

You might feel a little discomfort when the Physiologist gently rubs the skin under the electrodes so they stick better. Anything that you find too uncomfortable will not be continued.

How long will it take?

Staff will aim to see you on time, but sometimes more urgent or emergency procedures may cause delays. The test normally takes 45 to 60 minutes.

Will the test cause any issues or reactions?

If you are being tested because of possible seizures or epilepsy, it is possible you may have one of your usual attacks during the test. Recording this can help doctors make a clearer diagnosis.

If you have not had an attack for a long time and you have a driving licence, please tell the Physiologist at the start.

The test can then be adjusted to reduce the chance of triggering a seizure.

What happens next?

Your results will not be available immediately, however relevant clinical staff will review your test and send a report to the healthcare professional who referred you. They will discuss the results with you alongside your symptoms and any other tests.

Please keep taking any medications as normal unless you have been advised otherwise.

Helping get a child ready for their EEG

What? Why? Children in Hospital (WWCIH) charity makes videos to show you what happens during an EEG. It can be helpful to watch the video with your child before the appointment.

Visit whatwhychildreninhospital.org.uk/play-eeg