Psychologic and social factors have been implicated in the aetiology of dyspepsia. In this study these factors were investigated in relation to flatulent dyspepsia, a symptom complex that has traditionally been associated with gallbladder disease. Subjects completed the Middlesex Hospital Questionnaire and the Life Events Inventory and were interviewed in detail, using a semi-structured format. Three groups of patients with flatulent dyspepsia--those with and without gallbladder disease and post-cholecystectomy--all had significantly more associated somatic symptoms than non-dyspeptic subjects with gallbladder disease or normal controls, thus indicating greater emotional upset amongst dyspeptic patients. There was little evidence that symptoms were related to stressful life events.