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Guidelines for the investigation of chronic diarrhoea in adults: British Society of Gastroenterology, 3rd edition
  1. Ramesh P Arasaradnam1,2,3,
  2. Steven Brown4,
  3. Alastair Forbes5,
  4. Mark R Fox6,7,
  5. Pali Hungin8,
  6. Lawrence Kelman9,
  7. Giles Major10,
  8. Michelle O’Connor9,
  9. Dave S Sanders4,
  10. Rakesh Sinha11,
  11. Stephen Charles Smith12,
  12. Paul Thomas13,
  13. Julian R F Walters14
  1. 1 University Hospital Coventry, Coventry, UK
  2. 2 Department of Applied Biological Sciences, University of Coventry, Coventry, UK
  3. 3 Clinical Sciences Research Institute, University of Warwick, Warwick, UK
  4. 4 Sheffield Teaching Hospitals, Sheffield, UK
  5. 5 Norwich Medical School, University of East Anglia, Norwich, UK
  6. 6 University of Zürich, Zürich, Switzerland
  7. 7 Abdominal Centre, St Claraspital, Basel, Switzerland
  8. 8 School of Medicine, Pharmacy & Health, University of Durham, Durham, UK
  9. 9 Patient Representative, Secretary BAM Support, Coventry, UK
  10. 10 NIHR Nottingham Biomedical Research Centre (BRC), Nottingham University Hospitals NHS Trust and the University of Nottingham, Nottingham, UK
  11. 11 Department of Radiology, South Warwickshire Hospitals, Warwick, UK
  12. 12 Department of Clinical Biochemistry, Midlands and NW Bowel Cancer Screening Hub, Rugby, UK
  13. 13 Department of Gastroenterology, Musgrave Park Hospital, Taunton, UK
  14. 14 Division of Digestive Diseases, Imperial College London, London, UK
  1. Correspondence to Professor Ramesh P Arasaradnam, Department of Gastroenterology, University Hospitals Coventry & Warwickshire, Coventry, CV2 2DX, UK; r.arasaradnam{at}


Chronic diarrhoea is a common problem, hence clear guidance on investigations is required. This is an updated guideline from 2003 for the investigations of chronic diarrhoea commissioned by the Clinical Services and Standards Committee of the British Society of Gastroenterology (BSG). This document has undergone significant revision in content through input by 13 members of the Guideline Development Group (GDG) representing various institutions. The GRADE system was used to appraise the quality of evidence and grading of recommendations.

  • diarrhoea
  • diarrhoeal disease

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  • Contributors All authors formed part of the Guideline Development Group (GDG) and contributed equally to this manuscript.

  • Funding This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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