The proposed study will be a pilot randomized controlled trial comparing treatment as usual (TAU) to treatment as usual plus a brief Acceptance and Commitment Therapy (ACT) intervention (TAU + ACT) with mastectomy and lumpectomy patients identified as at-risk for developing persistent post-operative pain. The ACT intervention is a single individual therapy session scheduled two weeks following surgery. Potential participants will be recruited from the University of Iowa Breast Cancer Clinic. A sample size of n = 30 for each arm will be recruited. An attrition rate of 20% is anticipated so the total N to be recruited for the study is 72 participants. Study measures will consist of self-report questionnaires and medical record data. Data will be collected prior to surgery, one-week after surgery, and 3 months after surgery.
Inclusion criteria: 1) ≥18 years of age, 2) scheduled for mastectomy or lumpectomy for breast cancer or DCIS, 3) identified to be "at risk" (per guidelines below). At risk criteria: Psychological distress (elevated anxiety, depression, or pain catastrophizing), under the age of 50, or with a pre-existing chronic pain condition. Scores of 10 or above on the Generalized Anxiety Disorders 7-item scale or the Personal Health Questionnaire Depression 8 item Scale will indicate elevated anxiety or depression. A score of 30 or above on the Pain Catastrophizing Scale will indicate elevated catastrophizing. Exclusion Criteria: 1\) language or cognitive barriers preventing completion of questionnaires, 2) severe psychiatric disorder: bipolar or psychotic disorder, 3) significant surgical complications.