The relationship between sleep disturbance,symptoms and daytime functioning in psoriasis: a prospective study integrating actigraphy and experience sampling methodology |
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Institution: | 1. Manchester Centre for Health Psychology, University of Manchester, UK;2. Centre for Dermatology, Division of Musculoskeletal and Dermatological Sciences, University of Manchester, UK;3. School of Psychological Sciences, University of Liverpool, UK;4. Department of Population Health, Health Services Research and Primary Care, University of Manchester, UK;5. School of Healthcare Sciences, Cardiff University, UK;6. Salford Royal NHS Foundation Trust, Manchester, UK;7. Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, UK |
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Abstract: | Objective/backgroundSleep disturbance is common in individuals with psoriasis and appears to be related to both physical and psychological factors. We sought to examine whether psoriasis symptoms, night-time arousal and low mood predicted subsequent objective and self-reported sleep; and whether objective and self-reported sleep predicted next-day psoriasis symptoms and day-time functioning.Participants/MethodsA total of 19 individuals (Female: 11 57.9%], median age: 39 years) with chronic plaque psoriasis and poor sleep quality (mean Pittsburgh Sleep Quality Index, PSQI = 9.11) participated. Momentary assessments of psoriasis symptoms, mood and daytime functioning were completed at five pseudo-random intervals each day for 15 days using time-stamped digital diary entry. Objective sleep was estimated using wrist-worn actigraphy. Self-reported sleep and night-time arousal were assessed each morning using validated measures.Results and conclusionsTwo-level random intercept models showed that increased night-time arousal was associated with poorer diary-reported sleep. Neither self-reported nor objective sleep parameters were associated with daytime psoriasis symptoms in bi-directional analyses. Diary-reported sleep predicted next-day functioning, specifically sleepiness, concentration, and fatigue. Actigraphy-defined total sleep time predicted next-day fatigue. Night-time arousal is associated with poorer self-reported sleep in people with psoriasis, and sleep predicts next-day functioning. Contrary to our hypothesis, sleep disturbance does not appear to be associated with momentary assessments of psoriasis symptoms. |
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Keywords: | Sleep disturbance Psoriasis Actigraphy Simplified Psoriasis Index Severity Subscale"} {"#name":"keyword" "$":{"id":"kwrd0030"} "$$":[{"#name":"text" "_":"(SPI–S) Experience Sampling Methodology"} {"#name":"keyword" "$":{"id":"kwrd0040"} "$$":[{"#name":"text" "_":"(ESM) |
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