What’s the Difference Between a Cold and the Flu?

Though both are viral respiratory illnesses, the cold and the flu are caused by different viruses and vary in severity. Understanding the difference helps you manage symptoms effectively and avoid unnecessary medications.

Colds typically develop gradually. Symptoms include sneezing, sore throat, nasal congestion, and a mild cough. Fever is rare. Most people can function normally with a cold, though they may feel fatigued.

The flu, however, often starts abruptly with high fever, chills, body aches, and significant fatigue. It can cause severe complications, especially in the elderly, young children, or those with weakened immune systems. Cough and sore throat may be present, but the intensity of symptoms tends to be much stronger than with a cold.

Treatment also differs. Colds usually require rest, hydration, and over-the-counter relief. The flu may require antiviral medications if caught early.

FAQs:

Q: Can I get both at the same time?

A: It’s rare but possible. Some people get co-infections, especially during peak virus seasons.

Q: When should I see a doctor?

A: If symptoms worsen after 3–4 days, or you have trouble breathing, high fever, or severe fatigue.

Editor’s Note:

If you feel like you've been "hit by a truck," it’s probably the flu—not just a cold.

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