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

Symptoms usually include a fever, chills, cough, sore throat, runny nose, body aches, headache, fatigue, and swollen lymph ...

A cold, on the other hand, will typically involve a sore throat, stuffy nose, and sneezing ... other viral infection it can trigger swollen lymph nodes and postnasal drip that can cause soreness ...

Discover how allergies can cause swollen lymph nodes, and learn to distinguish between normal immune responses and warning signs that require medical attention.