[From medical transition to transition to adulthood, a possible conflict of temporality for young people affected with chronic diseases].

Therapeutic advances have increased the survival rates of children and adolescents affected with chronic diseases. For these young patients, however, the transition from pediatric to adult medical care has been identified as potentially associated with disruptions in care. Switching to services for adults implies a profound change in the patient's relationship with the healthcare system, moving from family care, centered on the adolescents and their parents, to individual care delivered by services or establishments with rules different from those of pediatrics. This article highlights the social issues at stake in the transition process, and shows the tensions that may exist between the temporalities of medical and social transitions. The medical transition, because it is implicitly organized around the age of 18 years and the legal majority, tends to come into conflict with the temporality of the other steps that constitute, in our contemporary societies, the transition to adulthood.