In recent years, many foreign studies have found that 20-30% of patients with epilepsy who are unsatisfied with medication are not actually epileptic but have been misdiagnosed as such for many years. Almost all of these patients have undergone multiple EEGs or even long-duration EEGs. The main reason for this misdiagnosis is a misinterpretation of the EEG. This means that an otherwise normal and variable EEG waveform is mistaken for an “epileptic wave” or “abnormal discharge”, leading to a wrong diagnosis. Such a high rate of misdiagnosis causes many patients to suffer from long-term mental burden and physical damage caused by side effects of medications. Therefore, it is important to review the correct diagnosis for patients with (1) unsatisfactory efficacy of antiepileptic drugs, (2) distinctive seizure triggers, such as “emotion” or “pain”, and (3) “hysterical temperament”. The correctness of the diagnosis should be examined. A careful analysis of the patient’s seizures recorded with a video EEG that records both seizure manifestations and EEG changes can usually lead to a correct differential diagnosis, but this is not yet possible in 100% of cases.