The diagnosis of epilepsy is often not straightforward, and misdiagnosis is not rare . A detailed and reliable account of the event by an eyewitness is the most important part of the diagnostic evaluation, but may not be available .
Electroencephalography (EEG) is an important diagnostic test in evaluating a patient with possible epilepsy. It can provide support for the diagnosis of epilepsy and also assists in classifying the underlying epileptic syndrome.
However, there are several reasons why EEG alone cannot be used to make or refute a specific diagnosis of epilepsy:
●Most EEG patterns can be caused by a wide variety of different neurologic diseases.
●Many diseases can cause more than one type of EEG pattern.