Sleep quality in Behçet's disease: a systematic literature review

Behçet's Disease (BD) can be correlated with sleep impairment and fatigue, resulting in low quality of life (QoL); however, a comprehensive evaluation of this issue is still missing. We performed a systematic literature review (SLR) of existing evidence in literature regarding sleep quality in BD. Fifteen papers were included in the SLR. Two domains were mainly considered: global sleep characteristics (i) and the identification of specific sleep disorders (ii) in BD patients. From our analysis, it was found that patients affected by BD scored significantly higher Pittsburgh Sleep Quality Index (PSQI) compared to controls. Four papers out of 15 (27%) studied the relationship between sleep disturbance in BD and disease activity and with regards to disease activity measures, BD-Current Activity Form was adopted in all papers, followed by Behçet's Disease Severity (BDS) score, genital ulcer severity score and oral ulcer severity score. Poor sleep quality showed a positive correlation with active disease in 3 out of 4 studies. Six papers reported significant differences between BD patients with and without sleep disturbances regarding specific disease manifestations. Notably, arthritis and genital ulcers were found to be more severe when the PSQI score increased. Our work demonstrated lower quality of sleep in BD patients when compared to the general population, both as altered sleep parameters and higher incidence of specific sleep disorders. A global clinical patient evaluation should thereby include sleep assessment through the creation and adoption of disease-specific and accessible tests.