Psychogenic nonepileptic seizure (PNES) is one of the most common clinical conditions in which the diagnostic complexity is experienced. Misdiagnosis leads to many years of wrong treatment regimens, side effects of drugs, additional financial burdens and adverse effects on social life. Differential diagnosis with epileptic seizures (ES) is one of the most common problems in neurology clinics as well as other health centers. A careful history from the patient and his relatives, detailed neurological and psychiatric examination are very important in reaching the correct diagnosis and treatment. Although imaging advances such as video electroencephalography (vEEG) have improved the ability of physicians to accurately identify these disorders, the diagnosis and treatment of PNES is still a challenging issue. Early diagnosis, young age, less psychiatric comorbidity have a positive effect on prognosis. Psychiatric evaluation of patients with PNES may be particularly helpful in elucidating the etiology and detecting comorbid diseases and may be helpful in the long-term treatment of these patients.