Diarrhea is frequent watery bowel movements.
Acute diarrhea starts suddenly and lasts a short time. If you have cramps or abdominal pain that lasts more than a few days, becomes intense, or affects only one area of your abdomen, tell your doctor. In addition, if you are lightheaded, have blood or mucus in your bowel movements, or have a high fever, call your doctor. The symptoms of acute diarrhea usually last less than 3 days. Ask your doctor if you can take aspirin, acetaminophen, or ibuprofen to control your fever.