This set of guidelines looks into the assistance and support given to those suffering from trauma and the treatment they recieve.Over the last two decades research has established a substantive evidence base in relation to trauma. However a huge gap still exists between evidence about the effects of trauma on individuals and possibilities for recovery, as well as in the treatment and service responses which enable sustained recovery. The ASCA Practice Guidelines for Treatment of Complex Trauma and Trauma Informed Care and Service Delivery (the Guidelines) are informed by this research.