[Pregnancy Delusions and Pseudocyesis: Brief Approach].

Introduction: Pregnancy delusions have usually been considered as symptoms of psychotic disorders in opposition to the hysterical and psychosomatic nature of pseudocyesis, though several authors have described some semiologic intersection between the two phenomena.

Method: Introduction of four cases of patients with pregnancy delusions as well as review and discussion of relevant bibliography.

Results: In fact, there are symptoms shared by pregnancy delusions psychosis and pseudocyesis, without detriment of nosological differentiation between the two phenomena.