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Acute diarrhea, a common gastrointestinal disturbance, is characterized by the rapid evacuation of fluid stools, leading to an excessive weight in fluid. This condition typically arises from disorders affecting intestinal water and electrolyte transport. It can be triggered by an increased osmotic load within the intestine, excessive secretion of electrolytes and water, mucosal exudation of protein and fluid, or altered intestinal motility. The primary risks of acute diarrhea are dehydration...
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Diarrhea is characterized by the occurrence of frequent, watery bowel movements. Various factors can trigger diarrhea, including viral or bacterial infections, foodborne illnesses, side effects from certain medications, and underlying digestive disorders. If not adequately managed, diarrhea can lead to complications such as dehydration, electrolyte imbalances, and nutrient deficiencies. Severe diarrhea can lead to significant weight loss, malnutrition, and weakened immune function.
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Upon diagnosis, managing Inflammatory Bowel Disease (IBD) involves addressing several crucial aspects. The primary goals include resting the bowel, correcting malnutrition, and providing symptomatic relief. Resting the bowel may consist of medications to reduce inflammation and promote healing. Correcting malnutrition is essential, often requiring dietary adjustments and nutritional supplements. Symptomatic relief aims to ease pain, diarrhea, and other discomforts in IBD.
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Antibiotic-Associated Diarrhea Beyond C. Difficile: A Scoping Review.

Vijairam Selvaraj1, Mohd Amer Alsamman2

  • 1Department of Medicine The Miriam Hospital, Warren Alpert Medical School of Brown University, Providence, RI, USA.

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Antibiotic-associated diarrhea (AAD) stems from gut microbiota disruption. This review clarifies the roles of *Clostridioides difficile* and other microbes in AAD pathogenesis.

Keywords:
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Area of Science:

  • Gastroenterology
  • Microbiology
  • Pharmacology

Background:

  • Antibiotic use frequently leads to diarrheal illness.
  • Antibiotic-associated diarrhea (AAD) pathogenesis involves gut microbiota alteration, pathogen overgrowth, and drug toxicity.
  • Less than 33% of AAD cases are linked to *Clostridioides difficile* (CDI), indicating other causes remain poorly understood.

Purpose of the Study:

  • To systematically review existing data on AAD.
  • To elucidate the pathogenic mechanisms of both CDI and non-CDI AAD.
  • To provide a comprehensive understanding of AAD etiology.

Main Methods:

  • Systematic review of current literature on AAD.
  • Analysis of data on microbial alterations and opportunistic pathogen proliferation.
  • Inclusion of figures detailing pathogenic mechanisms.

Main Results:

  • Established pathogenesis of *Clostridioides difficile* infection (CDI).
  • Identified unclear roles and mechanisms for other putative microbial causes of AAD, including *Clostridium perfringens*, *Staphylococcus aureus*, *Klebsiella oxytoca*, and *Candida species*.
  • Highlighted significant gaps in diagnosing and treating non-CDI AAD.

Conclusions:

  • AAD is a complex condition with multiple potential microbial triggers beyond *C. difficile*.
  • Further research is needed to clarify the pathogenesis of non-CDI AAD.
  • Improved diagnostic and therapeutic strategies are required for the majority of AAD cases.