Complex trauma presents in diverse ways with a range of impacts it can be challenging to identify. The prevalence of complex trauma, which can underlie contrasting presentations, also means that all health professionals need to attune to it. This is because `[i]n contrast to the traumatized person who has experienced a sense of safety and well-being prior to onset of the (single-incident) trauma, the survivor of complex trauma does not start with this advantage’ (Shapiro, 2010). This session addresses the nature, forms, and impacts of complex trauma and the implications for working therapeutically with people who experience it.