How long should it take for a swollen lymph node to go down?

Typically 2-4 wks..: Swollen lymph nodes are reactive to infection of some types and these nodes tend to subside in 2-4wks time. Some may persist much long if chronic-active infections such as hiv/monos etc. Obviously cancerous node tend to persist and grow as well..So if a node is not subsiding after a few wks, check with your doc...Good luck.

Depends: It depends on the cause and depending on that it may not go down. You may feel the node every couple of weeks, if the lymph gland doubles in size, becomes painful, ulcerates, or other nodes become enlarged, or you develop fever, or lose weight, you should see a doctor.