Psychiatry is the medical speciality devoted to the study, diagnosis, treatment, and prevention of mental disorders. These include various affective, behavioural, cognitive and perceptual abnormalities.
Initial psychiatric assessment of a person typically begins with a case history and mental status examination. Treatment may be delivered on an inpatient or outpatient basis, depending on the severity of functional impairment or on other aspects of the disorder in question. Research and treatment within psychiatry, as a whole, are conducted on an interdisciplinary basis, sourcing an array of sub-specialities and theoretical approaches.