During late 19th and early 20th century neuropsychiatrists began to identify common behavioral and cognitive disturbances in epilepsy, but it is not until 1973 that Norman Gestchwind described the basics of what we know as Gestchwind syndrome. This syndrome includes the triada of hyper-religiosity, hypergraphia and hypo/hypersexuality and it was mainly associated with temporal lobe epilepsy. Moreover, it is well known the association between epilepsy and psychotic symptoms, the so-called schizophrenia-like syndrome, which can lead us to a false diagnosis of schizophrenia. We report a 44-year-old man who was brought to the hospital with delusional ideation of prosecution and reference in his work environment with important behavioral disruption, as well as delusional ideation of religious content. He had a diagnosis of schizophrenia since he was 18-years-old and personal history of generalized tonic-clonic convulsions in his twenties. During the admission, he recovered ad integrum very rapidly with low doses of risperidone, but referred recurrence of déjà vu episodes. After reviewing his patobiography and past medical history, we identified the presence of hypergraphia, hypersexuality and a profound religious feeling, fulfilling the criteria for Gestchwind syndrome, in the context of which was later diagnosed as chronic epileptic psychosis. It is very important a careful approach to the patobiography and personal history. Also, we should include classic differential diagnosis such as Gestchwind syndrome, as they can lead us finally to the correct diagnosis, which in this case meant not only a different treatment but also a better prognosis.