The relationship between trauma and psychosis is well established with a large amount of overlap between the ICD/DSM (International Classification of Diseases/Diagnostic and Statistical Manual of Mental Disorders) diagnostic criteria for post-traumatic stress disorder (PTSD) and psychosis and/or schizophrenia. In spite of co-morbidity and evidence of the links and underlying mechanisms, trauma is rarely a focus of intervention in psychosis. Psychosis has often been on the list of exclusion criteria for PTSD research studies. There is a lack of literature on the impact of trauma work with people experiencing psychosis. The National Institute for Health and Care
Excellence (NICE) (2014) suggests that Early Intervention in Psychosis (EIP) service users should be assessed for PTSD, and PTSD guidelines (NICE, 2005) followed for those who show signs of post-traumatic stress. There is a need to evaluate the effectiveness of therapeutic approaches for people with PTSD and co-morbid psychosis.
These case studies aim to provide initial evidence of how two EIP clients experienced and responded to NICE-recommended psychological therapy for trauma. This study aims to test the feasibility of trauma work delivered via a phasic approach in a novel population. Two EIP clients received psychological therapy [including traumafocused cognitive behavioural therapy (CBT) and eye movement desensitization and reprocessing (EMDR)] for identified traumatic experiences. Assessment outcome measures were utilized to establish the effectiveness of the interventions. Both clients reported significant improvements following therapy, including reduced trauma-related distress, reduced distress from symptoms of psychosis and improved quality of life.
Clients with co-morbid PTSD and symptoms of psychosis are likely to benefit from recommended psychological treatments for PTSD. Further research is required to address generalizability to a larger population.