Comprehensive psychiatry
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The purpose of the study was to examine the association between the subjective sleep quality and pain threshold in fibromyalgia. Sixteen patients with fibromyalgia were included in the study. ⋯ The pain threshold was negatively correlated with the scores for subjective sleep quality, habitual sleep efficiency, and sleep disturbance and the PSQI global score. We conclude that there is a negative correlation between pain and sleep disturbance: increased pain sensitivity is associated with greater sleep disturbance.