Psychosis has intrigued and confused neuroscientists for many years, yet there seems to be no clear explanation for why and how it occurs. There is also not just one disorder of psychosis, such as schizophrenia, some epileptic patients experience the same symptoms.That is called schizophrenia-like psychosis of epilepsy (SLPE), which is similar to primary schizophrenia but also very different. This systematic review will explain SLPE as a disorder in itself, compare it to other psychotic disorders, provide research findings and conclude what we can learn from better understanding psychosis in general.