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 ...
Verywell Health on MSN1y
Lumps on Your Neck
Medically reviewed by John Carew, MD A lump on the side of the neck could be a swollen lymph node caused by a bacterial or ...