Diagnostics

EEG (Electroencephalography)

A painless test that records the electrical activity of the brain.

Overview

An EEG (electroencephalogram) records the brain's electrical activity using small sensors (electrodes) placed on the scalp. The test is painless and does not send electricity into the body.

An EEG is most often used to help assess seizures and epilepsy. It is one part of the overall assessment: the results are interpreted together with your symptoms and examination.

Please confirm with the clinic when you book whether this test is currently available and where it will be done.

Why this test may be advised

  • Suspected seizures, fits or unexplained blackouts
  • To help work out the type of epilepsy
  • Episodes of confusion or altered awareness
  • To review brain activity during epilepsy treatment, when the doctor advises it

Having one or more of these does not by itself mean you have a particular condition. A doctor's assessment is needed to find the cause.

What the test involves

  1. Small electrodes are attached to the scalp using a paste or a cap.
  2. You sit or lie comfortably and relax, with your eyes closed for much of the recording.
  3. You may be asked to breathe deeply or look at a flashing light, as these can bring out certain brain patterns.
  4. The electrodes are removed afterwards, and the paste can be washed out of the hair.

Who may need this test

  • People advised by a doctor to have an EEG for seizures, blackouts or episodes of altered awareness
  • People with epilepsy whose doctor wants to review their brain activity

How to prepare

It helps to bring:

  • Ask the clinic when you book whether there are any specific instructions for this test
  • Continue your usual medicines unless the doctor tells you otherwise
  • Previous EEG reports, if you have had this test before
  • Previous medical reports, prescriptions and hospital discharge summaries
  • MRI or CT scan films and reports, if you have them
  • A list of all the medicines you take, with their doses
  • A short note of your symptoms: when they started, how often they happen and what makes them better or worse

What happens next

  • The recording is reviewed and a report is prepared.
  • The doctor explains the results together with your symptoms and examination.
  • A normal EEG does not always rule out epilepsy, so further tests may sometimes be advised.

Recommendations depend on the clinician's assessment of your individual situation. This website cannot diagnose your condition or guarantee a particular result.

Frequently asked questions

Is an EEG painful?

No. The electrodes only record activity; they do not give an electric shock.

Does a normal EEG mean I do not have epilepsy?

Not necessarily. Seizure activity may not appear during a short recording. The doctor considers the EEG together with your history and examination.

How do I find out whether the test is available?

Call the clinic or send a WhatsApp message to ask about EEG availability and appointment times.

Clinic locations

Please confirm the OPD day, timings and availability of this service when you book.

This page gives general information to help you understand this topic. It is not a diagnosis and does not replace a consultation with a doctor.

In an emergency

If you or someone with you has sudden weakness or numbness, facial drooping, slurred speech, a seizure lasting more than 5 minutes, a sudden severe headache or loss of consciousness, call 112 or go to the nearest emergency department immediately. Do not wait for an appointment or rely on this website.

Call 112

Epilepsy

A condition that causes repeated seizures due to abnormal electrical activity in the brain.

View Details: Epilepsy

Neurology

Consultation and ongoing care for conditions affecting the brain, spinal cord, nerves and muscles.

View Details: Neurology

Book an appointment or contact the clinic

Call or send a WhatsApp message to ask about appointment times at the Patna, Ara and Siwan clinics.