PubMed · 6834367
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F A Jones. 1983. Indigestion.. https://pubmed.ncbi.nlm.nih.gov/6834367/
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Irritable bowel syndrome is a common disorder characterized by symptoms of abdominal pain with diarrhea and/or constipation. It is associated with significant disability and health care costs. A practical approach to diagnosis utilizes the symptom-based Rome criteria. Management of patients has been helped by recent findings relating to the pathophysiology of the disorder. Dysregulation of intestinal motor functions, sensory functions and central nervous system functions is currently believed to be the basis for irritable bowel symptoms. Symptoms are a result of both abnormal intestinal motility and enhanced visceral sensitivity. Psychosocial factors can affect the illness experience and the clinical outcome. An effective physician-patient relationship is required for a successful outcome. Individualized treatment involves an integrated pharmacologic and behavioral approach determined by the predominant symptom type, the severity of the symptoms and the degree of disability.
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The aims of this study were to determine whether increased pain sensitivity in patients with irritable bowel is due to physiological differences in perceptual sensitivity or psychological influences on perception, and whether prior sexual abuse accounts for increased pain sensitivity. Seventeen sexually abused and 15 nonabused women with irritable bowel were compared to 13 sexually abused and 14 nonabused women without irritable bowel. Among the nonabused subjects, the volume of rectal distension that produced moderate pain was lower in IBS patients than in controls, replicating earlier studies, but these thresholds were correlated with psychological measures of anxiety and somatization. The ability to discriminate between painful distensions (perceptual sensitivity) was not different between groups. Sexual abuse was not associated with lower pain thresholds. Thus, differences in pain sensitivity appear to be due to psychological influences on perception, but a history of sexual abuse does not contribute significantly to this pain sensitivity.