Contaminated drinking water is a common culprit of acute diarrhea. This may happen when a person drinks water directly from a creek, river, or another body of water. One parasite commonly found in water is giardia. It lives in the intestines and causes violent diarrhea, painful cramping, and in some cases, nausea and vomiting. Most times, the giardia will leave the body naturally and illness will resolve itself. Following the infection, however, patients often require treatment for dehydration.
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