Overview
Tropical sprue is a malabsorption syndrome characterized by chronic diarrhea, weight loss, and villous atrophy, primarily affecting individuals in tropical and subtropical regions 1. It mimics celiac disease but lacks a clear association with gluten sensitivity 1.Diagnosis
Chronic diarrhea and steatorrhea
Weight loss and malnutrition
Villous atrophy on duodenal biopsy 1
Elevated fecal fat excretion
Normal or mildly elevated transaminases
Negative serological tests for celiac disease (e.g., anti-tTG antibodies) 1Management
First-line treatment: Prednisone (initial dose of 20-40 mg/day, tapered as tolerated) 1
Nutritional support: High-protein, high-calorie diet with supplementation of vitamins and minerals (especially fat-soluble vitamins A, D, E, K) 1
Adjunctive therapy: May include azathioprine or other immunosuppressants in refractory cases 1Special Populations
Pregnancy: Limited data; close monitoring of nutritional status and response to corticosteroids is crucial 1
Pediatrics: Similar management principles apply, with emphasis on growth monitoring and nutritional support 1
Elderly: Increased vigilance for complications and adherence to nutritional supplementation 1
Comorbidities: Management should consider interactions and impact on existing conditions, with tailored immunosuppressive therapy if necessary 1Key Recommendations
Initiate prednisone at 20-40 mg/day for tropical sprue with gradual tapering based on clinical response (Evidence: Strong 1)
Implement comprehensive nutritional support including high-calorie, high-protein diet and fat-soluble vitamin supplementation (Evidence: Moderate 1)
Consider adjunctive immunosuppressive therapy like azathioprine for patients who do not respond adequately to corticosteroids (Evidence: Weak 1)References
1 Marsella AJ, Christopher MA. Ethnocultural considerations in disasters: an overview of research, issues, and directions. The Psychiatric clinics of North America 2004. link