Complex trauma — Complex trauma describes repeated, pervasive traumatic experiences and their interacting psychological consequences. Interpersonal abuse and profound neglect are important examples, especially during development. The term describes an exposure and impact pattern and is distinct from a formal diagnosis of complex PTSD. [Source](https://www.nctsn.org/what-is-child-trauma/trauma-types/complex-trauma) — Exposure pattern.

Added October 5, 2026