Diarrhea can result from damage to the intestinal lining caused by viruses or bacteria, malabsorption, inflammatory processes, bile salt and pancreatic enzyme deficiency, abnormal motility, or the presence of osmotically active solutes in the gut. While it is important to elicit information to determine the possible cause of diarrhea, be sure to check circulatory status first. Some patients may need rehydration therapy more urgently than they need a diagnosis. The main goals of treatment are to prevent dehydration and correct electrolyte imbalance, to provide supportive and symptomatic therapy, and to treat underlying disease. In most cases, a specific diagnosis is not necessary to guide initial treatment.