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

"My male German Shorthaired Pointer is red all over. Red ears, red eyelids, and red private parts, including anus and tummy.

Allergies occur when your immune system overreacts to allergens like pet dander, pollen, mold, certain foods, or medications. Allergy symptoms may include a runny nose, congestion, coughing ...