Discover how allergies can cause swollen lymph nodes, and learn to distinguish between normal immune responses and warning ...

Medically reviewed by Daniel More, MD Allergies occur when your immune system overreacts to allergens like pet dander, pollen ...

But for approximately 30 million Americans with food allergies—including 4 million children—immune cells mistakenly identify ...

Alpha-gal syndrome (AGS) is a severe tick-vectored food allergy caused by sensitivity to the galactose-alpha-1,3-galactose (alpha-gal) carbohydrate. It is now estimated to affect as many as ...

Food allergies are a lot more than just avoiding certain dishes, they require a relentless attention to detail and of course, ...