In the psychodynamic approach we understand the defensive meaning of anorec
tic and bulimic conduct, and its value as a reorganizing of objective relat
ions: difficulties in investing, antagonism between the objective inclinati
on of these patients and the need to protect their narcissistic balance. Th
e avoidance of depression linked to a compensatory juxtaposed narcissistic
schema must be appreciated in order to understand the developing risks in t
hese behaviours. The psychopathological significance of these behaviours, t
heir stakes, and their therapeutic consequences are discussed. (C) 2001 Edi
tions scientifiques et medicales Elsevier SAS.