Psychiatry is the study of mental diseases, which is a branch of medicine that deals with the diagnosis, treatment, and prevention of mental health disorders. It is a medical specialty that focuses on the evaluation, prevention, diagnosis, and treatment of mental, emotional, and behavioral disorders. Psychiatrists are trained to understand the biological, psychological, and social components of mental health and illness. They use a variety of treatments, including psychotherapy, medication, and other interventions, to help people manage their mental health issues.