Adults with seasonal flu don't usually vomit or have diarrhea, but children might. Some symptoms can mean your illness is severe.
If you have flu symptoms and are at risk of complications, see your For older adults and people with a chronic illness, pneumonia can be.
People who have flu often feel some or all of these symptoms: people may have vomiting and diarrhea, though this is more common in children than adults.
Get the facts on influenza causes, treatment, and vaccine side effects. Plus, learn how cold and flu symptoms differ, when to call a doctor, and when to get a flu.
Flu is a common infectious viral illness spread by coughs and sneezes. It can be very Flu symptoms come on very quickly and can include: a sudden fever – a.