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Chronic pain (CP) is a common condition affecting millions of people worldwide. Compassion-related interventions are proving to be advantageous in CP, and self-compassion (SC) is hypothesized to be related with pain regulation physiological processes, as well as with psychological benefits in CP. We aimed to review scientific literature on: 1) Compassion-based psychological interventions and their changes in pain outcomes; and 2) associations between SC and pain-related outcomes. We performed a systematic research in four electronic databases: MEDLINE, EMBASE, PsycINFO and the Cochrane Library from inception until April 2020. In Question 1, we included studies involving adult patients with CP who participated in compassion-based psychological interventions. In Question 2, we included studies that examined the associations between SC and pain outcomes in adults with CP. We identified 16 studies. For Question 1, we included seven studies focused on different compassion-based interventions that assessed at least one pain outcome, in a total of 253 participants with CP associated with multiple conditions. For Question 2, we included nine studies, in a total of 1,430 participants, with eight different pain outcomes: Intensity, acceptance, catastrophizing, self-efficacy, disability, distress, pain related coping and anxiety. Considering the high heterogeneity between studies and the poor-quality assessment, we could not draw definitive conclusions on the efficacy of compassion-based interventions nor on the association between SC and pain outcomes. Studies are further discussed in detail. This review can be a starting point for large-scale and high-quality trials in this area as it provides an organized overview of the current literature on this topic.
Lanzaro et al. (Fri,) studied this question.