Stomach Virus
You may hear your doctor call this viral gastroenteritis. People also call it stomach flu, but it's not caused by the flu virus.
There are different types of stomach viruses. Norovirus is the most common in the United States.
Since a stomach virus and food poisoning have similar symptoms, like cramps, it’s easy to confuse the two. You get a stomach virus through close contact with someone who has the virus, such as sharing food or kitchen utensils, like a fork or knife. You can also get the virus by eating or drinking unsafe food and water. Unlike food poisoning, the virus can spread easily to other people -- at least for the first few days you have it.
Other symptoms include:
Watery diarrhea
Stomach pain
Upset stomach and throwing up
Muscle aches or headache
Low-grade fever
There’s no medical treatment for a stomach virus. There are some things you can do at home to ward off dehydration and make you feel better.
Avoid solid foods. Sip plenty of liquids instead -- water, clear broths, or caffeine-free sports drinks.
Ease into eating. Start with things that are easy on your stomach.
Get lots of rest, too. Dehydration and being sick may have made you weak and tired.
Most people with a stomach virus get better in a few days. Dehydration is a serious concern. You may have to go to the hospital for it. Call your doctor if you think you’ve become dehydrated.
Food Allergy
These happen when your body’s immune system defends itself against a food it has mistaken as harmful.
The most common food allergies are to proteins like:
Shellfish
Nuts
Fish
Eggs
Milk
Peanuts
If you’re allergic to certain foods, it’s best to avoid them. A dangerous allergic reaction called anaphylaxis can cause a sudden drop in blood pressure, trouble swallowing, and shortness of breath. If not treated immediately, it can be fatal.
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