Sleep Quality and Cognitive Performance in Chronic Primary Musculoskeletal Pain: An Observational Study With Healthy Controls

This study contributes to a deeper understanding of the cognitive difficulties experienced by individuals with chronic primary musculoskeletal pain, a recently defined diagnosis in the 11th revision of the International Classification of Diseases. It highlights the importance of sleep quality as a predictor of cognitive performance-particularly in attention, processing speed and working memory-independently of pain intensity and psychological distress. These findings support the integration of sleep-focused strategies into assessment and intervention approaches in chronic pain populations.