For this test, the doctor uses a special instrument to look at the inside of the rectum and lower part of the colon. This test is similar to sigmoidoscopy, but the doctor looks at the entire colon. In most cases, replacing lost fluid to prevent dehydration is the only treatment necessary. Instead, doctors usually prescribe antibiotics. Viral causes are either treated with medication or left to run their course, depending on the severity and type of the virus.
Dehydration is particularly dangerous for children, who can die from it within a matter of days.
Although water is extremely important in preventing dehydration, it does not contain electrolytes. To maintain electrolyte levels, you could have broth or soups, which contain sodium, and fruit juices, soft fruits, or vegetables, which contain potassium. For children, doctors often recommend a special rehydration solution that contains the nutrients they need. You can buy this solution in the grocery store without a prescription. Examples include Pedialyte, Ceralyte, and Infalyte.