This article addresses the health needs of unaccompanied undocumented minors (UMs) received in Geneva. In our experience and according to the literature, the most frequent diagnoses in this population are depression, anxiety disorder, posttraumatic stress disorder and substance abuse. Their medical and psychological treatments are often complicated by their psychosocial difficulties as well as by their wandering. Their treatment should be given by a multidisciplinary care team that works with the different structures that support them both socially and administratively. The adolescent health unit of the Geneva University Hospital give them the opportunity to reclaim their physical and mental health. It also enables them to bond with others and rethink their future trajectories.