Although some controversies exist, it is well known that psychological disorders are prevalent in patients with inflammatory bowel diseases (IBD). Previous studies have shown that, as with any patients with chronic physical illness, many IBD patients (21% to 35%) present with anxiety and depression.1 During the relapses, it has been reported that more than 80% of patients showed anxiety state and 60% showed depression.
2It has yet to be proven what kind of cause-and-effect relationship exists between IBD and anxiety and depression. These unstable emotional states of IBD patients can aggravate pain and gastrointestinal symptoms by increasing inflammatory activity and lower the patients' quality of life by contributing to feelings of fatigue and decreasing the motivation needed to overcome the disease.3 Therefore, it is important to evaluate the prevalence of anxiety and depression in patients with IBD and to implement an appropriate treatment plan. In previous studies, the factors reported to affect the mood disorders included gender, age, education, socioeconomic deprivation, knowledge score, disease duration, extraintestinal manifestations such as arthritis and stomatitis, use of steroid or immunosuppressants, treatment adherence, disease activity, previous bowel surgery, distribution of inflammation, and disease related quality of life. [4][5][6] However, in Asian countries like Korea, not much research has been conducted on such topics. A recently published study reported that anxiety and depression is common in Korean IBD patients in remission and suggested that appropriate management be provided for these patients. . Because HADS is less influenced by topics related to physical illnesses such as fatigue and wellbeing, it is commonly used to screen mental disorders in IBD patients. Within CD patients, 44% were anxious and 15% were depressed, and within UC patients, 41% were anxious and 24% were depressed. Although there were no healthy matched controls, these prevalence rates were greater than those of the general population in Korea. Some studies found that the amount of psychological distress in IBD patients were associated with disease activity, and the prevalence of anxiety and depression in quiescent IBD patients did not differ significantly from that of the general population.2,9,10 However, irritable bowel syndrome-like symptoms was two to three times more frequent in quiescent IBD patients than in the control group, and this had consistent associations with anxiety and depression. 10 In a recent study on Korean inactive IBD patients, the prevalences of anxiety and depression were 27.4% and 33.6%, respectively, higher than the 26% and 9% previously reported by the Western study using the HADS.
7,10Especially within the CD patients, results showed higher frequency for mood disorder compared to the healthy controls. In this study by Kim et al., 8 the prevalence of anxiety and depression was reported to be high in both quiescent CD and UC patients, suggesting that a significant number of the Korean inact...