Diagnosis of epilepsy is essentially a clinical diagnosis. An accurate and detailed description of the event by an eye witness is the most important aid to the doctor in reaching a diagnosis. A person who had suffered any of the above situations should be evaluated in detail by a physician. It is preferable that an eye-witness of the event accompany the patient to the doctor. In most cases the physician can reach a reasonable diagnosis from a clinical examination of the patient. Sophisticated investigations (CT Scan, EEG, and MRI) are helpful in certain situations in identifying the underlying cause of the seizure.