Epilepsy surgery in patients with coexisting psychogenic nonepileptic seizures: diagnosis and treatment

The prevalence of epileptic seizures among patients with psychogenic nonepileptic seizures may range from five to fifty percent. Diagnosis of both conditions occurring in association may be difficult and requires both clinical skills and prolonged video-EEG monitoring. Occurrence of seemingly psychogenic events during video-EEG monitoring should be interpreted with caution, and the relative role of both psychogenic and epileptic seizures in day-to-day living should be carefully evaluated for each individual patient. Surgery is not contraindicated in this setting, however patients and family members should be educated about both conditions before surgical decision. Psychogenic seizures and other psychiatric co-morbidities should be properly assessed and treated before surgery. Diagnosis and management of postoperative events (epileptic or psychogenic) is challenging. This difficulty can be minimized by appropriate presurgical management, that includes diagnostic testing, neurologic and psychiatric treatment and patient and family counseling.