idemiological studies reveal that aging has significant consequences in community mental health. The mobile Team of the old age psychiatry (EMPAA) in Lausanne has the mission to respond to the increasing demands of psychiatric care, in a flexible, rapid and economic way, combining a high level of conceptual specificity with the logic of proximity. This article describes the development of this mobile team and reports data on the demographic pattern of patients and degree of satisfaction in the caregiver network. The question that arises in this context is that of the extension of this model in the other geographical areas of the district (Vaud country).