EEG is an essential test for the diagnosis of epilepsy. The presence of epileptic waves (i.e., epileptiform discharges) on EEG is an important basis for the diagnosis of epilepsy, and generally speaking, the presence of epileptic waves on EEG can only mean that epilepsy is possible. The diagnosis of epilepsy is based on clinical manifestations and EEG. The presence of recurrent seizure symptoms, along with the presence of epileptic waves on EEG, is sufficient for diagnosis. However, the EEG is not the only basis, as there are individuals with epilepsy whose EEG may be normal. Even with a 24-hour long-range EEG, the positive detection rate is only 80%. However, if the presence of clinical manifestations of seizures cannot be confirmed, epilepsy is not yet diagnosed despite the detection of epileptic waves on the EEG. There are many forms of seizures in epileptic patients, and the most common types according to the common name are grand mal, petit mal, restrictive seizures and psychomotor seizures. You should go to the hospital promptly when you find similar manifestations.