The article explores how sleep, emotions, pain levels, and daily functioning are connected in children and teens with chronic pain. The researchers wanted to understand if poor sleep leads to more pain and disability in children with chronic pain and, if so, whether positive and negative emotions help explain how poor sleep affects pain and disability.
The sample included 213 children and teens aged 7–17 who were being treated for chronic pain at a specialized pain clinic. About 70% were girls. The most common pain locations were the head, midsection, back, arms and legs, with many having pain in multiple body regions.
The participants completed questionnaires measuring:
- Sleep quality over the past month (things like time to fall asleep, total sleep time, sleep disturbances)
- How often they felt positive emotions (interested, excited, happy) and negative emotions (sad, angry, nervous) in recent weeks
- Pain levels over the past month on a 0–10 scale
- How much pain interfered with daily activities like going to school, doing chores, seeing friends (i.e., disability)
The researchers found that 74% of the children reported poor sleep quality and that poorer sleep was related to higher pain, more disability, more negative emotions and fewer positive emotions.
Additionally, using a type of statistical analysis called mediation analysis, the researchers found that negative emotions partially explained how poor sleep led to worse pain. Specifically, poor sleep increased negative emotions which then increased pain. Mediation analyses also suggested that both positive and negative emotions partially explained the relationship between poor sleep and disability. Specifically, poor sleep increased negative emotions and decreased positive emotions which interfered with daily functioning.
These findings suggest that addressing sleep problems and negative mood may help reduce pain and improve functioning for children with chronic pain. However, because of the design of the study (participants filled out all the questionnaires at a single time point) it is impossible to know the order in which the problems emerged (e.g., did poor sleep lead to more pain, did pain make it difficult to sleep, or both). We also cannot draw conclusions about causes and effects with this design. Finally, the study also relied on self-report questionnaires which have some limitations. Overall, this study highlights the interconnected roles of sleep, emotions, pain and functioning in pediatric chronic pain patients. Considering all these factors may lead to better treatment approaches.
