A cold and the flu (also called influenza) are alike in many ways. Both cold and flu can sometimes lead to more serious problems. A cold usually includes symptoms of a stuffy or runny nose. They last a couple of days to a week. Flu symptoms are usually tiredness, fever, headache, and muscle aches and pains. Coughing can be a sign of either a cold or the flu.1
You should call your doctor in these situations:2
Practice other good health habits:3