RT Journal Article SR Electronic T1 Sleep and Sleep Complaints in Juvenile Fibromyalgia Syndrome JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP jrheum.220720 DO 10.3899/jrheum.220720 A1 Clara Malattia A1 Lorenzo Chiarella A1 Miriam Sansone A1 Angela Pistorio A1 Claudio Lavarello A1 Manuela Carpaneto A1 Raffaele Ferri A1 Angelo Ravelli A1 Lino Nobili YR 2023 UL http://www.jrheum.org/content/early/2023/01/10/jrheum.220720.abstract AB Objective To investigate sleep quality in juvenile fibromyalgia syndrome (JFS) and its impact on the global burden of the disease. Methods Consecutive JFS patients who performed full-night polysomnography (PSG) were included in this cross-sectional study. JFS related symptoms, neuropsychiatric features, and sleep quality were assessed using self-report measures. PSG sleep parameters, including N3 distribution index, were obtained from patients and age-matched healthy controls. Results We included 25 patients (F 20, median age 15.7 years). Non restorative sleep was reported by 22/25 (88%) patients. JFS patients showed significantly longer Sleep Period Time (P=0.004) and increased wake time after sleep onset (P=0.03) compared to healthy peers. N3 sleep distribution index was significantly lower in patients than in control group (P=0.02). Subjective poor sleep quality was related to Widespread Pain Index (WPI) (rs-0.65), symptom severity scale (rs-0.64), depressive symptoms (rs-0.58), fatigue (rs-0.44), and symptoms severity upon awakening (rs-0.65). N3 distribution index was correlated to depressive symptoms (rs 0.41) and irritability (rs 0.40). On multiple regression analysis, WPI was predicted by subjective sleep quality (β= -0.32, P=0.04), whereas depressive symptoms were predicted by subjective sleep measures (β= -0.32, P= 0.04) and PSG parameters (N3 min: β= -0.07, P=0.03). Conclusion Sleep complaints are a key hallmark of JFS and has significant impact on relevant clinical domains of the disease, such as pain and depression.