This manual introduces a concept of trauma and offers a framework for becoming a trauma-informed organization, system, or service sector. The manual provides a definition of trauma and a trauma-informed approach, and offers 6 key principles and 10 implementation domains.

This practical guide updates and expands the discussion presented in SAMHSA's Concept of Trauma and Guidance for a Trauma-Informed Approach Resource from 2014. The primary goal of this guide is to provide implementation strategies across multiple domains based on the original publication.