A New Approach in Chronic Pain; Acceptance & Commitment Therapy-Exposure & Perspective Taking (ACT-EPT)

Background: Chronic pain is a highly prevalent phenomenon with a large impact on the individual\'s wellbeing. Acceptance and Commitment Therapy (ACT) can be used to help patients relate to chronic pain in a way that helps improve their quality of life. This paper introduces an ACT protocol specific to chronic pain patients: ACT- Exposure and Perspective Taking (ACT-EPT). Aspects specific to this therapy are the focus on exposure as a means to elicit behavioural and emotional change regarding pain experience and it\'s format as a compact individual therapy. Objectives: Investigators conduct a single case experimental study (ABA design) with a multiple baseline design, aimed at assessing the effectiveness of the experimental ACT-EPT protocol (phase B) compared to usual care (phase A) in individual chronic pain patients. Outcomes include the increase of participation in daily life and health related quality of life, measured with the Short Form-12 (SF-12). Quantitative results will be combined with qualitative results from interviews in a mixed methods design. Participants: Five adults with chronic pain referred to a rehabilitation centre (≥18 years old). Methods: Phases A and B together take 16 weeks for each participant, during which weekly quantitative measurements will be taken. The length of the first phase A will be randomised. The intervention (phase B) consists of weekly ACT-EPT sessions with a maximum of 3 sessions of approximately 90 minutes each. Individual interviews will take place after the last quantitative measurements. These focus on two topics: psychological processes of change and evaluating the intervention.