This article, through the analysis of the emergency conditions and diffusion of the "posttraumatic stress disorder" in the documents produced by the activists who fight for the disappearance of prostitution, intends to account for certain moral and ideological questions associated with the mobilization of the Sanitary registration in the discourses on prostitution and trafficking. To do this, we begin by examining the arguments that seek to demonstrate, before the appearance of "posttraumatic stress disorder", the psychological consequences of the exercise of prostitution. Secondly, after having developed the content of this psychiatric category and shown how it derives from a more general movement of medicalization of society, we will present the main investigations that led to its recognition in prostitutes. Finally, the last part will be devoted to considering the ideological efficacy of this "psychiatrization" of the rhetoric surrounding prostitution