Mucosal invasion of intestine causes which type of diarrhea –
**Core Concept**
Mucosal invasion of the intestine by pathogens, such as bacteria, viruses, or parasites, disrupts the normal function of the intestinal epithelium, leading to the loss of fluid and electrolytes into the intestinal lumen, resulting in diarrhea. This type of diarrhea is characterized by the invasion of the intestinal mucosa, which triggers a local inflammatory response and increased permeability.
**Why the Correct Answer is Right**
Mucosal invasion of the intestine triggers a local inflammatory response, which leads to the production of pro-inflammatory cytokines and mediators. These inflammatory mediators increase the permeability of the intestinal epithelium, allowing for the loss of fluid and electrolytes into the intestinal lumen. The pathogen's invasion also disrupts the normal function of the intestinal epithelial cells, leading to the loss of sodium and chloride ions, which contributes to the development of diarrhea. The correct answer is associated with the pathophysiological changes that occur in the intestinal mucosa due to invasion by pathogens.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not accurately describe the pathophysiology of diarrhea caused by mucosal invasion of the intestine. Diarrhea caused by mucosal invasion is not typically characterized by a sudden onset or a high volume of fluid loss.
* **Option B:** This option is incorrect because it refers to a type of diarrhea that is caused by a rapid increase in the secretion of fluid and electrolytes into the intestinal lumen, which is not characteristic of mucosal invasion.
* **Option C:** This option is incorrect because it describes a type of diarrhea that is caused by a systemic infection or inflammation, rather than localized mucosal invasion.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that mucosal invasion of the intestine by pathogens can lead to a range of clinical presentations, from mild diarrhea to life-threatening conditions such as toxic megacolon or intestinal perforation.
**Correct Answer: C. Inflammatory diarrhea**