[The vulnerability factors and the psychodynamic stakes in post-traumatic reactions]

Some people react to collective trauma with clinical manifestations which often become a clinical syndrome. How can these different reactions be explained? Inspired by clinical research in the literature review, and divided according to the fragilizing aspects of the triad of vulnerability (trans-traumatic, pre-traumatic and posttraumatic), the author brings a psychoanalytical explanation to those different reactions.