[Abstract] Interdisciplinarity is the combined care of a patient by two or more healthcare professionals. Taking into account the contribution of the different healthcare partners improves patient follow-up, quality of the care and use of resources. General practitioner (GP) becomes the pivot of a combined interdisciplinary ambulatory care allowing a prolonged staying at home and avoiding the multiplication of care offers. This paper, by the clinical description of a patient suffering from Diogenes Syndrome, allows a cross of the care between the GP, home nurse and pharmacist. It deals with follow-up questions, acceptance, objectives of treatment, communication between healthcare partners and "false notes" in the follow-up.