This article presents a selective review of psychosocial research on irritable bowel syndrome (IBS) in adults and on a possible developmental precursor, recurrent abdominal pain (RAP), in children. For IBS the authors provide a summary of epidemiology, of the psychological and psychiatric disturbances frequently found among IBS patients, and of the possible role of early abuse in IBS. A review of the psychosocial treatments for IBS finds strong evidence to support the efficacy of hypnotherapy, cognitive therapy, and brief psychodynamic psychotherapy. The research relating RAP to IBS is briefly reviewed, as is the research on its psychological treatment. Cognitive-behavioral therapy that combines operant elements and stress management has the strongest support as a treatment for RAP.Irritable bowel syndrome (IBS) is a functional disorder of the lower gastrointestinal (GI) tract in which psychosocial assessment and treatment procedures could play a major role. 1 This article selectively summarizes information on these psychosocial assessment and treatment procedures as they pertain to adults; in addition, it briefly summarizes the literature on a possible precursor of IBS, recurrent abdominal pain (RAP) in children. More detailed summaries of these topics can be found in a recent book by Edward B. Blanchard (Blanchard, 2001), Irritable Bowel Syndrome: Psychosocial Assessment and Treatment.
Definitions of IBSThe formal definition of IBS is in a state of flux with a new definition, so-called Rome II, put forth in 1999 (Thompson et al., 1999). The three definitions are summarized in the Appendix.To the best of our knowledge, no reported empirical studies have shown a functional advantage of one definition over another; that is, we found no instances in which cases that met the criteria responded differently to a specified treatment than similar cases that did not meet full criteria, or in which cases that met the criteria showed a different natural history, and so forth.
Epidemiology of IBSTwo well-conducted epidemiologic surveys have been published on American samples in the last 10 years: the Olmsted County Study, by Talley, Zinsmeister, Van Dyke, and Melton (1991), and the U.S. Householder Survey of Functional Gastrointestinal Disorders, by Drossman et al. (1993).In the Olmsted County Study, an age-and sex-stratified sample (N ϭ 1,021) of the residents of Olmsted County, Minnesota, between the ages of 30 and 64 were sent a validated self-report questionnaire (Talley, Phillips, Melton, Wiltgen, & Zinsmeister, 1989) that identified GI symptoms experienced over the past year, thus leading to valid diagnoses of functional GI disorders. Altogether, 835 individuals (82%) returned usable surveys. Of these, 26% reported abdominal pain more than six times in the past year, 17.9% reported chronic diarrhea, and 17.4% chronic constipation. Talley et al. (1991) found an overall prevalence of IBS of 17.0% (range ϭ 14.4 -19.6; 95% confidence interval), with women outnumbering men 1.15 to 1.0. Of the 329 individuals with function...