Case Study of Acceptance and Commitment Therapy and Functional Analysis for Emetophobia

Acceptance and Commitment Therapy (ACT) is a third-wave behavioral therapy that is an empirically supported treatment for various mental health concerns. ACT has been found to be efficacious for treating different types of anxiety disorders. This case study presents the conceptualization (functional analysis), treatment (ACT), and treatment outcomes of a client who presented with emetophobia, a phobia of vomiting, complicated by a metabolic disorder. Measures of emetophobia symptoms, mindfulness, cognitive fusion, thought control strategies, and believability of anxious thoughts and feelings, were collected at pretreatment, posttreatment, 6-month follow-up, and 12-month follow-up. The Reliable Change Index was used to evaluate changes across time. Large and clinically significant decreases on all measures were observed at posttreatment. At 12-month follow-up, improvements were maintained on all measures except the Reappraisal subscale of the Thought Control scale. The implications of this study are discussed, and recommendations are made for clinicians using ACT for the treatment of emetophobia