Journal of Psychotherapy Integration Vol. 29, Iss. 1,  (Mar 2019): 54-64. DOI:10.1037/int0000120 Posttraumatic stress disorder (PTSD) is a complex condition often influenced by personality characteristics and comorbidity with other psychiatric disorders. More recent understandings of PTSD have suggested that schemas play a role in the development and maintenance of this condition. Schema therapy (ST) was developed to address more characterological disturbances in chronic disorders. It is an integrative approach for treatment that incorporates practices from other therapeutic orientations. The purpose of this article is to describe some key components of ST and how these can be applied to the treatment of patients with more chronic or complex forms of PTSD.. To read the full article, log in using your NHS OpenAthens details.