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Viral Infections: Many viruses, such as rotavirus and norovirus, can lead to acute diarrhea, particularly in children.
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Bacterial Infections: Bacterial pathogens like Escherichia coli (E. coli), Salmonella, and Campylobacter can cause food poisoning and acute diarrhea when contaminated food or water is consumed.
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Parasitic Infections: Parasites like Giardia and Cryptosporidium can lead to diarrhea when ingested through contaminated water or food.
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Dietary Indiscretion: Consuming spicy, greasy, or spoiled food and overeating can irritate the digestive system and result in diarrhea.
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Medication Side Effects: Some medications, especially antibiotics, can disrupt the balance of gut bacteria and lead to diarrhea as a side effect.
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Traveler's Diarrhea: Traveling to regions with different hygiene standards can expose individuals to unfamiliar pathogens, leading to traveler's diarrhea.
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Stress and Anxiety: Emotional stress can affect the gastrointestinal system and result in diarrhea in some individuals.
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Food Allergies: In individuals with food allergies, consumption of allergenic foods can trigger diarrhea as part of an immune response.
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Dietary Intolerances: Intolerances to substances like lactose (lactose intolerance) or fructose can lead to diarrhea when these substances are ingested.
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Ingestion of Toxins: Consumption of foods contaminated with toxins, such as those produced by certain bacteria, can cause acute food poisoning and diarrhea.
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Gastrointestinal Illnesses: Some gastrointestinal conditions, like gastroenteritis, can cause acute diarrhea due to inflammation of the digestive tract.
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Viral Gastroenteritis: Viral gastroenteritis, often referred to as the "stomach flu," can lead to acute diarrhea, nausea, and vomiting.