Runny or stuffy nose
If your nose drips or stuffs up a few minutes after you walk outside, it may be allergic rhinitis. That’s a reaction to tiny particles in the air you breathe. Common causes include mold spores, pollen, detergents, and cleansers. A runny nose could be a serious warning, though, if it starts about an hour after you take a new drug. You might be allergic to this medicine.
Sneezing
A sneeze doesn’t seem too big a deal. But it could be a mild, early sign of a severe allergy, even to a food you eat. Your sneezes could also quickly give way to more serious symptoms. The next time you eat that food, you may not sneeze. But you might have a more intense reaction that sends you to the hospital.
