However obvious it might seem today that victims of persecutions suffer from psychological consequences of the violence inflicted on them, its political implications are a recent phenomenon. In the last decade, asylum seekers in France, as in other European countries, have been more and more often subject to demands of psychiatric expertise to prove the cogency of their claim to the status of refugee. This social innovation results from the convergence of two processes: on the one hand, the rapid decline in the legitimacy of asylum, leading to increasing expectations for evidence to establish the reality of persecutions; on the other hand, the emergence of trauma as a nosographical category legitimizing the traces of violence. At the crossroads of these two histories, a social field, mainly occupied by NGOs, has developed to answer this new need for proof from state institutions, with an increasing specialization on victims of torture and on psychic trauma, the two dimensions being partially independent. The final paradox is, however, that in a context of generalized suspicion toward refugees, the recognition of trauma at a collective level is counterbalanced by its limited impact on the evaluation of individual cases.