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Tropical sprue

Evidence last reviewed: 17 Aug 2026
Topic last updated: 15 Sep 2026

Summary

Definition

History and exam

Key diagnostic factors

  • prolonged exposure to an endemic area
  • constitutional symptoms
  • diarrhea
  • bloating, abdominal fullness, borborygmi
  • foul-smelling, greasy stools
  • glossitis, cheilitis/angular stomatitis
  • numbness of fingers and toes
Full details

Other diagnostic factors

  • fever
  • leg swelling
  • hair loss
  • pedal edema
  • hyperactive bowel sounds/borborygmi
  • hyperpigmentation/eczematous rash
  • pallor
  • dry eyes
  • corneal xerosis
  • decreased deep tendon reflexes/decreased vibratory sensation
  • night blindness
Full details

Risk factors

  • prolonged exposure to an endemic area
  • HLA antigen in the Aw-19 series
Full details

Diagnostic tests

1st tests to order

  • CBC
  • quantitative fecal fat assay
  • D-xylose test
  • serum folate
  • serum vitamin B12
Full details

Tests to consider

  • stool ova and parasites (O and P)
  • stool culture
  • upper gastrointestinal endoscopy with biopsy
  • folic acid therapeutic trial
Full details

Treatment algorithm

ONGOING

tropical sprue symptoms

Contributors

Authors

Lauren Pioppo Phelan, MD

Assistant Professor of Medicine

Duke University Medical Center

Durham, NC

Disclosures

LPP declares that she has no competing interests.

Iris L. Vance, MD

Assistant Professor of Medicine

Division of Gastroenterology

Duke University Medical Center

Durham, NC

Disclosures

ILV declares that she has no competing interests.

Acknowledgements

Dr Lauren P. Phelan and Dr Iris L. Vance would like to gratefully acknowledge Dr Daniel Wild and Dr Moises Guelrud, the previous contributors to this topic. DW and MG declare that they have no competing interests.

Peer reviewers

J. Thomas LaMont, MD

Professor of Medicine

Harvard Medical School

Division of Gastroenterology

Beth Israel Deaconess Medical Center

Boston, MA

Disclosures

JTLM declares that he has no competing interests.

Yassmeen Abdel-Aty, MD

Assistant professor

University of South Florida

Florida, FL

Disclosures

YAA declares that he has no competing interests.

Paul Ciclitira, MBBS, MD, PhD

Professor of Gastroenterology

Department of Diabetes and Nutritional Sciences

King's College London

Rayne Institute

St Thomas' Hospital

London

UK

Disclosures

PC declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Keele KD, Bound JP. Sprue in India: a clinical survey of 600 cases. BMJ. 1946 Jan 19;1:77-81.

Sheehy TW, Cohen WC, Wallace DK, et al. Tropical sprue in North Americans. JAMA. 1965 Dec 6;194(10):1069-76.

Sheehy TW, Baggs B, Perez-Santiago E, et al. Prognosis of tropical sprue. A study of the effect of folic acid on the intestinal aspects of acute and chronic sprue. Ann Intern Med. 1962 Dec;57:892-908.

Suarez RM, Spies TD, Suarez RM Jr. The use of folic acid in sprue. Ann Intern Med. 1947 May;26(5):643-77.

Rickles FR, Klipstein FA, Tomasini J, et al. Long-term follow-up of antibiotic-treated tropical sprue. Ann Intern Med. 1972 Feb;76:203-10.

Guerra R, Wheby MS, Bayless TM. Long-term antibiotic therapy in tropical sprue. Ann Intern Med. 1965 Oct;63:619-34.

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
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