ABSTRACT
The psychosocial treatment of psychiatric disorders via evidence-based psychotherapies (EBPs) has grown tremendously over the past several decades. Although these treatments originated from theoretical models applicable to multiple psychiatric diagnoses, such as behaviorism and cognitive theory, specific EBPs have been developed for each diagnosis over the years, with the number of disorders increasing with each revision of the Diagnostic and Statistical Manual for Mental Disorders (DSM) (Barlow, Allen, & Choate, 2004; Craske, 2012; Gros, Allan, & Szafranski, 2016). More recently, there has been an effort to develop integrated treatments that can address more than one co-occurring condition within a single EBP, such as those detailed in previous chapters for posttraumatic stress disorder (PTSD) and substance use disorder (SUD) comorbidity (PTSD/SUD) (Back et al., 2015; Danielson et al., 2012; Najavits, 2002). These developments in treatments for comorbidity have led to further advances in more fully transdiagnostic EBPs, or those that can treat multiple disorders, designed to address symptoms that are common in a set of conditions (e.g., anxiety disorders). Although these newer transdiagnostic EBPs are still largely in the development and initial evaluation phase, they offer much promise as the future of psychotherapy for common psychiatric disorders.
