Vomiting and diarrhea causes in adults
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Common Causes of Vomiting and Diarrhea in Adults
Vomiting and diarrhea in adults are most often caused by infections or irritations of the gastrointestinal (GI) tract. The most frequent causes include viral, bacterial, and, less commonly, parasitic infections, as well as food poisoning and certain non-infectious conditions Berlin2015Jassas2018Sriramulu2024+1 MORE.
Viral Gastroenteritis and Norovirus
Viral infections are the leading cause of vomiting and diarrhea in adults. Norovirus, in particular, is a major culprit and is sometimes called the "winter vomiting bug." It spreads easily and can cause symptoms like vomiting, diarrhea, fever, and fatigue. Norovirus outbreaks are common in group settings such as cruise ships and nursing homes, and the illness can lead to dehydration, especially in older adults Berlin2015Jassas2018Marino2024+3 MORE.
Bacterial Infections and Food Poisoning
Bacterial infections are another significant cause. Common bacteria include Escherichia coli (E. coli), Salmonella, and Staphylococcus aureus. These bacteria can be contracted through contaminated food or water, leading to food poisoning. Symptoms often appear rapidly after eating contaminated food and can include severe vomiting and diarrhea. Traveler’s diarrhea, often caused by bacteria in food or drink during foreign travel, is also a frequent issue Berlin2015Jassas2018Valenzuela2018+2 MORE.
Parasitic Infections
Although less common, parasites can also cause vomiting and diarrhea. These infections are more likely in areas with poor sanitation or after consuming contaminated water or food .
Non-Infectious and Unusual Causes
Non-infectious causes, such as eosinophilic gastroenteritis, can also lead to vomiting and diarrhea. This rare condition involves inflammation of the GI tract due to an abnormal increase in eosinophils, a type of white blood cell . Other non-infectious causes may include certain medications, food intolerances, or underlying chronic diseases .
Clinical Features and Complications
Adults with vomiting and diarrhea often experience additional symptoms such as abdominal pain, fever, and nausea. Dehydration is a serious complication, especially if fluid loss is not replaced. In some cases, infections can be persistent or severe, requiring medical attention Berlin2015Jassas2018Marino2024+3 MORE.
Conclusion
In summary, the most common causes of vomiting and diarrhea in adults are viral gastroenteritis (especially norovirus), bacterial infections (such as E. coli, Salmonella, and Staphylococcus aureus), food poisoning, and, less frequently, parasitic or non-infectious conditions. Prompt recognition and management, especially of dehydration, are important for recovery and prevention of complications Berlin2015Jassas2018Marino2024+5 MORE.
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