Background: Inflammatory bowel disease (IBD) as a chronic and debilitating disease is affected by sleep disturbance which increases the risk of malignancy. Sleep disturbance is more common in irritable bowel syndrome (IBS) and few reported studies have assessed its role in IBD. We evaluated the effect of IBS on sleep quality and quality of life (QOL) of IBD patients in clinical remission. Methods: In a cross-sectional study, 115 IBD patients in clinical remission aged from 14 to 70 years referred to gastroenterology outpatient departments and private gastroenterology offices from 2007 to 2016. Patients considered in four groups (with/without IBS). The Revised “Rome III criteria” used for diagnosing IBS. Pittsburgh Sleep Quality Index questionnaire and the health-related QOL questionnaire used for evaluating sleep quality and QOL. Results: About 85 (73.9%) cases had ulcerative colitis (UC) and 30 (26.1%) cases had Crohn's disease (CD). Forty (34.8%) cases had IBD + IBS. Poor sleep quality in UC + IBS (OR: 0.018, P = 0.003) and UC (OR: 0.016, P = 0.002) was less than CD. Diseases extent in left side colitis (OR: 0.064, P = 0.016) were less than with pancolitis. Sleep quality affected by quality of life (IBDQ) ( P = 0.048). Mean quality of life (IBDQ) in patients who had poor sleep was 11% less than those with good sleep. Conclusions: The syndrome of IBS affects the sleep quality of IBD in clinical remission, especially in CD. Its additive effect with IBD may worsen symptoms that correlated with sleep disturbance, such as pain, psychological and physical condition, and QOL.

Background: Ulcerative colitis (UC) is a chronic inflammatory disease with a variable and unpredictable course. This disease has noticeable consequences and by causing limitations in the life style of patients affects their quality of life. Objectives:In this study, we evaluated the quality of life (QOL) of these patients in the remission period of this disease. Methods: Health-related quality of life (HRQOL) in 96 patients suffering from UC in clinical remission phase were evaluated by the use of two questionnaires of IBDQ and SF-36 which evaluate the domains of QOL and physical-psychological health, respectively. Results were analyzed by independent sample t-test and regression analysis using of SPSS version 22.Results: Mean total scores from SF-36 and IBDQ tests were 79.5 ± 17.7 and 48.8 ± 9.5, respectively. Based on the results of IBD-Q test, the least score was given to the systemic symptoms (11.01 ± 3.17) and the most was related to the emotional function (30.06 ± 8.03). In the domain of physical-psychological health, physical health (15.06 ± 25.7) compared to the psychological health (33.5 ± 7.8) had a higher score. In addition, the mean total score from the IBD-Q test (P = 0.017), intestinal symptoms (P = 0.015) and emotional function (P = 0.007) were statistically more significant in males compared to the females. Conclusions:In patients suffering from UC in the remission phase males had a better HRQOL compared to females. Also remission period and absence of EIM have a positive effect on the QOL of these patients.