Etlouba Y, et al. - The underlying etiology and characteristics of patients presenting to the Emergency Department (ED) with the first episode of psychotic symptoms were investigated. Researchers performed a prospective review of medical records of 159 African, Asian, white, and mixed-race patients and classified them into one of three groups; psychosis due to an underlying medical condition (UMC), substance-induced psychotic disorders (SIPDs), and psychosis due to other primary psychiatric disorders (OPD). Observations revealed UMC to be a common etiology in patients presenting to the ED with the first episode of psychotic symptoms.