Introduction: An association can be found between patient with psychosis and perpetrating acts of violence. So, the caregiving role can impact negatively on psychosis carer psychological health and wellbeing. Objectives: The aim of this study was to identify the factors associated with post-traumatic stress disorder (PTSD) in family caregivers of psychotic patients following exposure to aggression. Methods: This cross-sectional study was carried out involving 95 family caregivers of psychotic patients followed in psychiatry.