There are a few glaring signs that can help you figure out if you've got a case of the common cold or your allergies are ...

Snot is completely normal. In response to infection, the immune system produces stickier and thicker snot. “Mucus is a ...

Kids seem to have a constant string of illnesses. But which signs of being sick mean they should stay home? Here are some ...

If you're like me, winter can feel like a season to endure rather than enjoy. The dark days, cold weather, lingering sniffles ...

Influenza is surging in the U.S., with doctor visits for flu symptoms at a 15-year high. Why is this flu season so bad? Doctors discuss flu trends and prevention.