01/29/2011 10:58 am ET | Updated May 25, 2011

Is It a Cold? The Flu? Allergies? What Your Symptoms Mean

With flu season in full swing, it's important to know what ails you (so you can help stop the spread by staying home). But how do you really know if you have the flu -- swine or seasonal -- or if it's just another cold or an allergy? Use our handy sympt-o-meter.

Cold, Flu, or Something Else?