The relationship between emotion regulation and pain catastrophizing in patients with chronic pain.

Objectives: Pain catastrophizing (PC) is a cognitive/emotional response to and in anticipation of pain that can be maladaptive, further exacerbating pain and difficulty in emotion regulation (ER). There is a lack of research on the interplay between PC and ER and its impact on pain. Our aim was to investigate whether ER exacerbated the pain experience through PC.

Methods: Adults with chronic non-cancer pain of >3 months' duration (n = 150) who were taking opioid medication were recruited from a large medical center in Pennsylvania. A battery of questionnaires was conducted to gather data on demographics, substance use, mental health histories, and health and pain outcomes. Measures used included the 18-Item Difficulties in Emotion Regulation Scale, the Pain Catastrophizing Scale, the Brief Pain Inventory-Short Form, and the Hospital Anxiety and Depression Scale. A structural equation model with latent variables was conducted to examine our aim.

Results: Both pain interference and severity were significantly positively associated with several psychosocial variables, such as anxiety, depression, ER constructs, PC, and distress intolerance. The associations between subscales and pain interference were larger than the associations between subscales and pain severity. PC fully mediated the paths from ER to pain experiences.

Discussion: Our results highlight the importance of several cognitive and emotional constructs: nonacceptance of negative emotions, lack of emotional awareness, magnification of the pain experience, and a sense of helplessness. Furthermore, by showing the indirect effects of PC in affecting ER and pain, we posit that ER, mediated by PC, might serve a critical role in influencing the pain experience in patients with chronic pain.