[Depression of the elderly].

The aging of the population increases the rate of depressive morbidity. It constitutes a major public health problem. In France, in 2018, people aged 65 or older represented 19.6% of the population. By 2040, they will represent about 25%. According to the World Health Organization, worldwide, among adults aged 60 and over, 15% suffer from a mental health disorder. 6.6% of disabilities are attributed to psychological or neurological disorders, the most common being dementia and depression (7%). A good knowledge of the depressive syndrome of the elderly is and will be essential for health professionals.