The Epidemiology of Depression and the Evolution of Treatment

Depression is a prevalent and pernicious disorder.About 1 in 5 US adults have at least 1 lifetime episode of major depression.Of those with depression, the majority will relapse over the long-term and many will have poor mental health outcomes and psychosocial disabilities.Over the past century, a range of treatments, including medications with varying mechanisms of action, have been developed to manage depression.Treatments from seizure therapies to an array of medications-amphetamine, tricyclic antidepressants, monoamine oxidase inhibitors, mixed-action antidepressants, selective serotonin reuptake inhibitors, and dual reuptake inhibitors-have evolved.