Psychogenic non-epileptic seizures resemble epileptic seizures but their pathophysiological mechanisms differ. Despite being quite frequent, they are often misunderstood, regularly leading to a misdiagnosis and therapeutic errors. The objective of this article is to provide a short review of the current knowledge about this pathology. We will detail the main epidemiological data of psychogenic non-epileptic seizures. We will then discuss the diagnostic approach, emphasizing the semiological differences that exist between psychogenic non-epileptic seizures and epileptic seizures. Then, we will detail the main therapeutic actions and discuss the importance of communication between clinicians, the patient and his/her family. Finally, we will discuss the long-term prognosis of this pathology, which remains quite poor.