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| | THE MERCK MANUAL, Sec. 3, Ch. 28, Gastroenteritis |
 | | Gastroenteritis: Inflammation of the lining of the stomach and intestines, predominantly manifested by upper GI tract symptoms (anorexia, nausea, vomiting), diarrhea, and abdominal discomfort. |
 | | The electrolyte and fluid loss associated with gastroenteritis may be little more than an inconvenience to an otherwise healthy adult but may be of grave significance to a person less able to withstand this loss (eg, the elderly, very young, or debilitated or those with certain concomitant illnesses). |
 | | Gastroenteritis may be of nonspecific, uncertain, or unknown etiology or of bacterial, viral, parasitic, or toxic etiology. |
| www.merck.com /pubs/mmanual/section3/chapter28/28a.htm (1284 words) |
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