[Diagnosis and treatment of late-life depression].

Late-life depression is a common pathology. The diagnosis can be difficult to make, due to intricacy of comorbidities, aging and treatments. The presentation is frequently atypical, with a high prevalence of somatic complaints. Depression is, in fact, underdiagnosed in this population and, when it is, poorly managed. This pathology constitutes a real public health problem due to impairment of functioning and quality of life, increase of comorbidities, use of health care and overall mortality, particularly by suicide. Treatment consists of psychotherapy, pharmacotherapy and/or electroconvulsive therapy.