Unipolar depression and dysthymia

Depression is an under-recognized, undertreated, common relapsing disorder that causes significant distress and impairment in social and occupational functioning. It is associated with an increased risk of death, not only through suicide, but also from physical illnesses such as cardiovascular disease. High-risk groups such as those suffering from chronic physical health problems should be screened for depression. Its aetiology is multifactorial, and co-morbidity with other psychiatric disorders is common.