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Irritable bowel syndrome is a very common clinical problem with a broad spectrum of severity. The management includes a combination of positive diagnosis of typical symptoms with limited investigations to exclude underlying structural or biochemical disorders. Therapeutic trials focus on the relief of predominant symptoms. Identification and modification of factors exacerbating symptoms, behavioural techniques and pharmacologic agents directed to the presumed gastrointestinal motor dysfunction are required. Psychological support by the physician is the most important part of treatment. Chronic constipation may be the predominant symptom of irritable bowel syndrome. Underlying organic disorders must be excluded by clinical examination and endoscopy. Severe chronic constipation requires further investigation of colonic motility and defecation. High fibre diet, osmotic laxatives and procinetic agents may lead to an improvement. In rare cases surgery may be indicated.