This article presents the working hypothesis that unresolved trauma in children and adolescents may contribute to (Islamist) radicalization, making it one of several risk factors. The idea is that individuals may perceive Islamist radicalization as a potential escape from the effects of their trauma, often without being fully aware of these underlying issues. The article focuses on two main groups: first, traumatized children and adolescents who have already undergone radicalization, where trauma therapy becomes a crucial element in the deradicalization process. Second, it also addresses children of radicalized individuals, as well as those who have experienced war, displacement, or other traumatic events. In these instances, trauma therapy may serve a preventive role, potentially preventing future radicalization and aiding in the deradicalization of their parents. Furthermore, treating traumatized parents or caregivers could play a preventive role in protecting children from the path of radicalization.