This casebook offers detailed guidance to help practitioners understand and implement the treatments recommended in the American Psychological Association’s Clinical Practice Guideline for the Treatment of Posttraumatic Stress Disorder in Adults. The authors describe the unique factors involved in PTSD treatment, and core competencies necessary for providers. Chapters then describe each treatment described in the guideline, summarize the empirical evidence for their effectiveness, and offer rich, detailed case examples that demonstrate how readers can use these interventions with real clients. Treatments described include cognitive behaviour therapy, cognitive processing therapy, cognitive therapy and prolonged exposure, brief eclectic psychotherapy, eye movement desensitization and reprocessing, and narrative exposure therapy. Medications including fluoxetine, paroxetine, sertraline, and venlafaxine are discussed as well. Intended for use with the Guideline, this book combines the best available research with expert clinical recommendations, to help readers make the clinical decisions that are best for their patients.