Acceptance and Commitment Therapy in the Transdiagnostic Treatment of a Breast Cancer Survivor: A Case Study1

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Abstract We describe a case report on acceptance and commitment therapy (ACT) for a breast cancer survivor with chronic postsurgical pain, fear of cancer recurrence, and depression. As part of multidisciplinary therapy at the pain center, 17 sessions of ACT and two follow‐up sessions were provided over approximately 6 months. Outcome measures (chronic pain and fear of cancer recurrence) and process measures (pain acceptance and valued action) were assessed. Outcome measures, including pain intensity, interference, quality of life, and fear of cancer recurrence, and ACT process measures improved after the intervention and at follow‐up sessions compared to baseline. Over the treatment course, depression symptoms worsened, which necessitated a leave of absence from work for several months, during which time the patient engaged in intensive ACT. Ultimately, the patient returned to work, resumed her hobbies, and acquired a new habit of exercising, demonstrating changes to her lifestyle as well. The results support the efficacy of ACT in patients with multiple psychological and physical symptoms.

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