Psychiatry is a branch of medicine which exists to study, prevent, and treatmental disorders in humans. The art and science of the clinical application of psychiatry has been considered a bridge between the social world and those who are mentally ill. Both its research and clinical application are considered interdisciplinary.Because of this, various subspecialties and theoretical approaches exist in psychiatric research and practice. Psychiatrists can be considered physicians who specialize in the doctor-patient relationship utilizing some of medicine's newest classification schemes, diagnostic tools and treatments