The author invites us to pay close attention to the behavior of people with Alzheimer's disease and to the behaviors we adopt with them. The entire question of behavioral expression arises in their case, just as it does for everyone else. We are led to delve into the mysteries of unconscious communication. It then becomes necessary to seriously examine the ideological aspects of the role attributed, without formal proof, to brain lesions. Such a guiding principle allows us to advance our understanding of the disease from the patient's perspective. A better understanding of their thought processes, their issues, and their psychological needs allows us to better organize their care and learn how to negotiate with them. The practice of sociotherapy, the principles of which are explained, provides a concrete illustration of this.
