True about tropical sprue are A/E:
**Core Concept**
Tropical sprue is a rare, acquired malabsorptive disorder characterized by chronic diarrhea, weight loss, and malnutrition. It is believed to be caused by an environmental factor, possibly related to the gut microbiota, and is prevalent in tropical regions.
**Why the Correct Answer is Right**
The correct answer is **A/E**, which stands for "all except." Tropical sprue is indeed characterized by malabsorption, diarrhea, and weight loss. The pathophysiology involves impaired intestinal absorption, which can be due to various factors, including bacterial overgrowth, altered gut motility, and impaired pancreatic enzyme function. Treatment typically involves antibiotics, folic acid supplements, and a diet rich in nutrients.
**Why Each Wrong Option is Incorrect**
* **Option B:** This option is incorrect because tropical sprue is not typically associated with an autoimmune response, as seen in conditions like celiac disease or Crohn's disease.
* **Option C:** This option is incorrect because tropical sprue is not a condition that resolves spontaneously; treatment is usually necessary to manage symptoms and prevent complications.
* **Option D:** This option is incorrect because tropical sprue is not a condition that is typically associated with a genetic predisposition; it is more likely related to environmental factors.
**Clinical Pearl / High-Yield Fact**
It's essential to consider tropical sprue in the differential diagnosis of chronic diarrhea and malabsorption, particularly in travelers returning from tropical regions. A high index of suspicion and appropriate diagnostic testing can help identify this condition and guide treatment.
**Correct Answer: D. None of the above statements are true about tropical sprue.**