Background: Crohn’s disease (CD) and ulcerative colitis (UC) belong to a group of Inflammatory Bowel Diseases (IBD). The most common symptoms are chronic diarrhoea, weakness, loss of weight, and chronic gastralgia (belly-aches). Beside somatic symptoms mild cognitive disturbances are observed in IBD patients. The most prominent are memory disturbances. The aim of the present work was to evaluate the occurrence of episodic memory disorders in IBD and to determine its profile as an index of the cognitive functions decrease. Material/Methods: The experimental group consisted of 30 patients (14 women and 16 men) aged 23 to 47 (mean age was 34.15 ± 8.34) with a diagnosis of Inflammatory Bowel Disease treated at the Gastroenterology Clinic of the 2nd University Hospital in Bydgoszcz. The patients with symptoms of deep depression and dementia as assessed by the Mini Mental State Examination (MMSE) were excluded from the study. The control group included healthy persons matched for the sex and age. Two tests were administered: Logical memory scale from WMS-III (Polish version) and the Hospital Anxiety and Depression Scale – (HADS). Results: An analysis of the scores revealed a mild decrease of cognitive functions in all 100% patients of the examined group. This was expressed in the case of attention (in 50% of patients) as well as memory (in 100% of patients). At the same time the examined patients showed mild anxiety symptoms. Conclusions: It is important to draw the attention of medical staff and family member to the occurrence of cognitive disorders in IBS patients, and the consequent communication problems. This creates the need to include elements of cognitive rehabilitation in the process of IBS patient treatment. [ABSTRACT FROM AUTHOR]