Psychiatric disorders are characterized by behavioral and cognitive deficits. It is crucial to develop intervention strategies helping individuals with psychiatric disorders, their caregivers and educators in daily life. To this purpose, eXtended Reality (XR), i.e. a simulation of the real world based on computer graphics, can be useful as it allows instructors and therapists to offer a safe, repeatable and diversifiable environment during learning. This mini review examines studies that have investigated the use of XR in psychiatric disorders. Virtual reality is a promising intervention with several potential applications about behavioral and cognitive rehabilitation treatment in psychiatric disorders.