Diarrhea is a condition in which loose, watery stools are passed more often than normal.
Diarrhea occurs when the colon or large intestine becomes irritated. This can be caused by many things, including infection, chemical toxins, inflammation, stress, or anxiety. The colon responds to this irritation in these ways:
Viruses cause most episodes of diarrhea. Other common causes are as follows:
The key symptom of diarrhea is frequent bouts of loose, watery stools. There also may be abdominal pain and cramping. The person may have loss of appetite, nausea, and vomiting. Stools that contain blood or pus may be a sign of a more serious health problem.
Diagnosis of diarrhea begins with a medical history and physical exam. If there is severe pain or blood in the stool, a healthcare provider will generally examine the abdomen. Occasionally, the provider may order one or more of the following tests:
Frequent hand-washing with soap and warm water is the best way to prevent diarrhea. This is especially important if a person has been exposed to anyone who has diarrhea or has used a public restroom. It is often hard to prevent diarrhea in children who attend day care. However, frequent hand-washing at the day care center may reduce the risks of diarrhea.
To help prevent traveler's diarrhea it is recommended that individuals avoid contaminated water and food. They should also avoid uncooked vegetables or fresh salads.
Dehydration is common in people with severe diarrhea. That is why getting plenty of fluids is very important in treating diarrhea. If diarrhea leads to dehydration, intravenous fluids may be given through a tube in a vein in the hand or arm.
People who have diarrhea should try to keep eating their normal diet. Adults and children should have regular meals three times a day. It is important that infants continue to drink formula or milk. There are oral electrolyte solutions, like Pedialyte, that replace lost minerals in infants with diarrhea.
Over-the-counter medicines, such as loperamide and bismuth subsalicylate, can help control diarrhea in adults. These medicines should not be used for children, and should not be used for more than 2 to 3 days in adults. If bacteria or certain parasites are found in the person's stool sample, antibiotics or other prescription medicines may be used.
Over-the-counter medicines for diarrhea may cause:
Antibiotics and other medicines may cause stomach upset, allergic reactions, and rash.
Diarrhea usually ends in 2 to 3 days, if not sooner. Generally, diarrhea that lasts a few days is not a cause for concern. If the diarrhea lasts longer, it's important to contact the healthcare provider. Any new or worsening symptoms should also be reported to the provider.
Author:James Broomfield, MD
Date Written:
Editor:Ballenberg, Sally, BS
Edit Date:09/30/01
Reviewer:Eileen McLaughlin, RN, BSN
Date Reviewed:08/29/01