Sore throat Runny nose.
Fever usually appears suddenly, and can alternate with chills.
Headache is usually accompanied by pain around the eyes, and the whites of the eyes can become reddened and irritated, with tearing and discharge. Muscle aches are usually located in the back and legs. Children with the flu sometimes suffer from nausea, vomiting, and diarrhea. Flu vs. common cold vs. allergies The early signs of influenza are often confused with those of a cold or allergies. If you suspect allergies, check our Allergy site for more information.