According to the Centers for Disease Control, the flu usually comes on suddenly. People who have the flu often feel some or all of these symptoms:
FLU VS. COMMON COLD
Flu Symptoms (more intense than common cold):
-Fever
-Body aches
-Extreme tiredness
-Dry cough are more common and intense
-Chills
-Headaches Common Cold Symptoms
-Stuffy/runny nose
-Cough
-Soar throat
-Fever is rare
-Slight body aches
-Mild fatigue
Source: Centers for Disease Control