What's the Difference
What’s the difference between a common cold and a pollen allergy?
Learn how to tell if your runny nose and sneezing are from a cold...
Health
Why Do Allergies Happen? Inside the Immune System’s Reaction to Harmless Substances
Discover why allergies occur when your immune system overreacts to harmless substances like pollen...
Health
Understanding Allergies: Why Our Immune System Overreacts to Harmless Substances
Discover why allergies occur when your immune system overreacts to harmless substances like pollen...