Late-life major depression is a high-incidence and difficult-to-treat affective disorder. Diagnosis of major depression in old age could also could be a challenge, due to aspects like (1) there is a higher vulnerability to the stigma of depression in this population, (2) hypochondriac ideation and somatic symptoms are the main symptoms, while depressive disposition or anhedonia are under-reported by such patients, (3) differential diagnosis includes various organic diseases, but also several psychiatric disorders, like neurocognitive disorders, organic affective disorders, drug induced affective disorders etc. Reduction of social relationships caused by retirement and loss of spouse and friends, as well as a decrease of personal inco...