What Are the Most Common Causes of a Fever and Upset Stomach?

-Fever and upset stomach are most commonly caused by a bacterial infection in the stomach or intestines.As a general rule of thumb, if a fever is present, that usually means that there is an infection somewhere in the body. When fever and upset stomach are present simultaneously, it is usually because the infection resides in the stomach or intestinal tract. Bacteria is the primary cause of most infections, and it can be spread through infected food when it is not cooked thoroughly or properly.

Caffeine should be avoided altogether, as it can lead to further fluid loss.

In some less common cases, fever and upset stomach may come as the result of an infection which originated somewhere other than the stomach. This generally means that the infection has spread and may be infecting the blood or other bodily systems. To prevent a stomach virus or bacterial infection, it is important to thoroughly cook all meats and eggs and to properly refrigerate foods that contain eggs or dairy.