Perinatal psychiatry is now defined in the French Public Health Code as joint parent-baby care. It focuses on parent-baby interactions, the baby\'s development and the parents\' psychological health. \"Mobile teams\" for joint (parent-baby) care, the very first of which date back to the 1990s, have been developed modestly thanks to the call for perinatal psychiatry projects in 2021 and those for child and adolescent psychiatry since 2019. These mobile units complement full-time outpatient and inpatient joint care units.

Helping elderly people over the age of 70 suffering from mental health problems to remain at home is one of the missions of the mobile psychogeriatric unit of Simone-Veil Hospital in Eaubonne. In a nursing home, then at home, the aim is to avoid certain hospitalisations. Institutions accept more readily residents with a history of psychiatric problems and the prescriptions. Furthermore, requests for intervention are better targeted by general practitioners for the benefit of the elderly patients.