Psychiatry is the medical specialty focused on diagnosing, preventing, and treating mental disorders.These involve various maladaptations related to mood, behavior, cognition, and perceptions.

Psychiatric assessment of a person normally starts with a case history and mental status examination.

Neuroimaging or other neurophysiological techniques may also be employed. Mental disorders are often diagnosed under clinical concepts listed in diagnostic manuals. Nowadays, psychiatric treatment usually includes a combination of psychiatric medication and psychotherapy.Modern practice also constitutes a wide variety of other modalities. These include assertive community treatment, community reinforcement, and supported employment.