Cold vs. Flu: How to Tell the Difference and When to See a Doctor

Colds and the flu are both respiratory infections, but the flu tends to hit harder and faster. Telling them apart helps you decide what to do next.

How the symptoms differ

Colds come on gradually with a runny nose and sore throat. The flu arrives suddenly, usually with fever, body aches, and exhaustion that can knock you out for days.

When to see a provider

Most colds resolve on their own. Consider getting care if you have a high or persistent fever, trouble breathing, symptoms that improve then suddenly worsen, or if you are in a higher-risk group.

The online option

For straightforward cases, a telehealth visit can assess your symptoms and, when appropriate, send treatment to your pharmacy the same day — no waiting room required.