Douglas A. Drossman

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The Rome diagnostic criteria for the functional bowel disorders and functional abdominal pain are used widely in research and practice. A committee consensus approach, including criticism from multinational expert reviewers, was used to revise the diagnostic criteria and update diagnosis and treatment recommendations, based on research results. The(More)
How irritable bowel syndrome (IBS) and itstreatment affect quality of life (QOL) is important. Todevelop a quality-of-life measure specific to irritablebowel syndrome, items were generated using a conceptual model and qualitative interviews with personsdiagnosed using the Rome criteria. Symptom frequency andbothersomeness indices were created.(More)
OBJECTIVE There has been growing interest in the investigation of health-related quality of life (HRQOL) among patients with gastrointestinal (GI) disorders. We recently reported on the development and preliminary validation of the IBS-QOL, a specific quality-of-life measure for irritable bowel syndrome (IBS). The aim of this study was to determine the(More)
The irritable bowel syndrome (IBS) is part of the larger group of functional gastrointestinal (GI) disorders that, despite differences in location and symptom patterns, share common features with regard to their motor and sensory physiology, central nervous system (CNS) relationships, and the approach to patient care.1 IBS is a functional bowel disorder(More)
OBJECTIVE To investigate whether placebo effects can experimentally be separated into the response to three components-assessment and observation, a therapeutic ritual (placebo treatment), and a supportive patient-practitioner relationship-and then progressively combined to produce incremental clinical improvement in patients with irritable bowel syndrome.(More)
The derivation of and concepts underlying the biopsychosocial model have not been well explained. This model does not relate psychosocial processes to illness in a linear fashion (e.g., as "psychogenic" or "psychophysiologic"). Rather, the model considers the degree to which factors interact to explain an illness condition. As an example, the irritable(More)
To understand the disorders of bowel motility, it is important to know the range of bowel patterns in the general population. We have devised a brief self-administered questionnaire which, when used among a group of 789 students and hospital employees, disclosed that 94.2% had stool frequencies between three per day and three per week, and that 17.1% had(More)
BACKGROUND Effective treatments for irritable bowel syndrome with constipation (IBS-C) are lacking. AIM To assess the efficacy and safety of lubiprostone in IBS-C. METHODS A combined analysis was performed among 1171 patients with a Rome II diagnosis of IBS-C in two phase-3 randomized trials of lubiprostone 8 mcg vs. placebo twice daily for 12 weeks.(More)