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Tropical sprue
Definition
Tropical sprue is a condition seen in residents of, or visitors to, tropical areas. It impairs the absorption of nutrients from the intestines, causing malabsorption.
See also: Celiac disease - sprue
Causes, incidence, and risk factors
The cause of this disease is swelling (inflammation) of the small intestine due to excess levels of certain types of bacteria in the intestines.
Risk factors are:
- Living in the tropics
- Long periods of travel to tropical destinations
Symptoms
- Abdominal cramps
- Diarrhea, worse on high-fat diet
- Excessive gas (flatus)
- Indigestion
- Irritability
- Muscle cramps
- Numbness
- Paleness
- Weight loss
Signs and tests
- Complete blood count (CBC)
- Comprehensive metabolic panel
- Enteroscopy
- Folate level (serum)
- Iron level (serum)
- Stool examination for bacteria and parasites
- Upper endoscopy
- Upper GI series
- Vitamin B12 level (serum)
Treatment
Treatment begins with plenty of fluids and electrolytes. Replacement of folate, iron, vitamin B12, and other nutrients may also be needed. Antibiotic therapy with tetracycline or another broad-spectrum antibiotic is given at the beginning of treatment.
Oral tetracycline is usually not prescribed for children until after all of their permanent teeth have appeared, because it can permanently discolor teeth that are still forming.
Support Groups
Expectations (prognosis)
The outcome is good with treatment.
Complications
Vitamin and mineral deficiencies are common complications.
In children, sprue leads to:
- Delay in the maturing of bones (skeletal maturation)
Calling your health care provider
Call your health care provider if:
- Tropical sprue symptoms get worse or do not improve with treatment
- You develop new symptoms
- You have diarrhea or other symptoms of this disorder for a long period of time, especially after spending time in the tropics
Prevention
Other than avoiding living in or traveling to tropical climates, there is no known prevention for tropical sprue.
References
Semrad CE, Powell DW. Approach to the patient with diarrhea and malabsorption. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 143.
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