• Adalbjorg Albertsdottir, Arun K Sigurdardottir, and Bjorg Thorleifsdottir.
• Reykjalundur rehabilitation center, Mosfellsbaer, Iceland.
• Laeknabladid. 2019 Sep 1; 105 (9): 379-384.

BackgroundSleep disturbances are common, underdiagnosed and have negative consequences for people with multiple -sclerosis.ObjectiveGather information about the prevalence of poor sleep quality and sleep disturbances in Icelanders with multiple -sclerosis.MethodA cross-sectional self-report survey.PopulationIcelanders with multiple sclerosis.SamplePeople with multiple sclerosis, who were on the online mailing list or had access to Facebook groups of the Multiple-Sclerosis-Society in Iceland. An electronic link with background questions and 4 questionnaires was available to participants. Questionnaires: The Pittsburgh- Sleep-Quality-Index (PSQI), the Insomnia-Severity-Index, the STOP-Bang-questionnaire and 5 diagnostic criteria for restless legs syndrome. Questionnaires were used to screen for poor sleep quality, and 7 different factors that can cause disturbed sleep. Data was analyzed with SPSS version 25.ResultsAlmost 40% of Icelanders with multiple sclerosis participated or 234 persons. Mean age was 47 years (range 20-92) and 77% were female. The prevalence of poor sleep quality (PSQI>5), was 68%. The factors that most often caused dis-turbed sleep were; bathroom breaks (39%), pain (37%), insomnia symptoms (30%) and sleep apnea symptoms (24%). Majority of participants or 79% had at least one sleep disturbance and on average they had close to two. Insomnia symptoms were strongly related to poor sleep quality.ConclusionHigh prevalence of poor sleep quality and sleep disturbances in people with multiple sclerosis needs to be addressed. PSQI can be used to screen for poor sleep quality and to assess whether further sleep evaluation is needed. Screening, diagnosis and treatment of insomnia should be implemented.

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