Symptoms of the flu include fever, headache, fatigue, cough, sore throat, runny or stuffy nose, body aches, diarrhea and vomiting (more common among children than adults).
If you develop flu-like symptoms and are concerned about your illness, especially if you are at high risk for complications of the flu, you should consult your health care provider. Those at high risk for complications include people 65 years or older, people with chronic medical conditions, pregnant women, and young children.
In some occasions a person presents a sudden onset of fever higher than 38 degrees centigrade, cough or sore throat and absence of other causes.
