Is It a Cold, the Flu, or a Sinus Infection?
These respiratory infections share similar symptoms, but a few subtle differences can tip you off.
Colds, the flu, and sinus infections have such similar symptoms that it can be tough to know what truly ails you. That said, a few subtle differences can tip you off. Diagnose yourself using this chart (and if you think you may have the flu, head to the doctor right away to get a prescription for Tamiflu).