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

Swollen glands in the neck, which are actually enlarged lymph nodes, are a sign that your body is trying to fight an infection or autoimmune disorder. Conditions that may cause swollen glands in ...

Painful armpit lumps are often due to a swollen ... cause painful lumps in the armpit. An infection may cause the following symptoms to occur with the armpit lump: swelling of other lymph nodes ...

A cold or the flu A viral infection, like a cold or the flu, can cause lymph nodes on one side of your neck to swell ... viral infection it can trigger swollen lymph nodes and postnasal drip ...