In this symposium, we will present several interventions that aims at detecting and treating young patients of pre-school age. We will describe a detecting and preventing intervention in kindergarten, the role of speech therapists with young patients with complex developmental delays, the multidisciplinary management of hyperactivity in pre-schoolers, the therapeutic action of a body-mediated group for children, and a psychotherapy centred on parenthood to treat young patients, their parents and the parent-child relationship.