Human Studies

Pain can interfere with the daily functioning of persons with multiple sclerosis (PwMS). Furthermore, beliefs about pain and activity engagement are reliably associated with persons' experience of chronic pain. This study aimed to explore the extent to which different aspects of PwMS' activity engagement is related to pain-related illness intrusiveness, and whether certain coping and support systems mediate that relationship.

The tendency to select threatening over benign interpretations of ambiguous bodily sensations and cues characterises young people with chronic pain. However, previous studies disagree over whether these biases extend to non-bodily harm situations such as social evaluation. Understanding the content of these biases is crucial to the development of pain management strategies seeking to modify such biases. Two hundred and forty-three young people aged 16-19 years completed an expanded version of the Adolescent Interpretation of Bodily Threat task. Using a factor-analytic approach, we removed items that did not consistently associate with bodily harm or social evaluation. Next, we examined whether the variance underlying negative and benign interpretations of bodily harm and social evaluation situations were best represented as a common factor (i.e., one-factor model), two distinct factors (i.e., two-factor model), or one common and two distinct factors (i.e., two-factor bi-factor model) in all adolescents. We then compared youth with and without persistent and impairing pain on factor scores derived from the best-fitting model. While negative interpretations of bodily harm and social evaluation situations emerged as distinct factors, benign interpretations across situations were best captured by a common factor and two situation-specific factors (i.e., bifactor model). Group comparisons showed that young people with moderate-to-high pain interference were more likely to endorse negative interpretations across all situations, and less likely to manifest a general benign interpretational style, than youth without interfering pain although some of these group differences were explained by co-occurring anxiety and depressive symptoms. Replication of these findings is needed.

Pain catastrophizing is an important predictor of pain-related outcomes. Caregiver and child levels of catastrophizing about child chronic pain are associated cross-sectionally, yet predictive associations testing interpersonal influences within caregiver-child dyads are lacking. The present study tested caregiver and child influences on partner catastrophizing about child pain over 1 month following initiation of interdisciplinary pain treatment and examined whether change in pain catastrophizing was associated with child pain interference.

Despite evidence of broad impact on daily functioning in adolescence, little is known regarding the life course effects of childhood chronic pain. This is the first nationally representative study to characterize the disruptive impact of chronic pain in adolescence on key educational, vocational, and social outcomes in young adulthood (12 years later). Data from the National Longitudinal Study of Adolescent to Adult Health (Add Health) was used, including 3,174 youth with chronic pain and 11,610 without chronic pain. Multivariate regression analyses controlling for sociodemographic factors and adolescent depression found that chronic pain in adolescence was associated with long-term risk for a constellation of impairments indicative of socioeconomic disparities. Specifically, adolescent chronic pain was subsequently associated with reduced educational attainment (e.g., lower odds of attaining a high school diploma and bachelor's degree), poor vocational functioning (e.g., lower odds of receiving employer-provided benefits, higher odds of receiving public aid), and social impairments (e.g., early parenthood, lower self-reported romantic relationship quality) in young adulthood. These findings provide a window into the future of adolescents with chronic pain, contributing to the limited knowledge base of the scope of adverse long-term outcomes during the transition to adulthood. However, several questions remain. Increased research attention is needed to understand the life course impact of pediatric chronic pain, including early risk factors and underlying mechanisms that drive adverse outcomes as they unfold across the lifespan.