unfortunately your question is lacking crucial information to provide a good answer. how old is your son? has he received routine childhood vaccines? enlarged lymph nodes can signal a variety of potential conditions. your best bet is to take your son to his pediatrician for an exam. if your son has not been immunized against mumps (the mmr vaccine) you definitely should seek medical attention. mumps in a young man (generally older than age 10) can cause a related condition called orchitis which is swelling of the testicles. this can cause fertility problems down the road. regardless of your son's immunization status having enlarged lymph nodes is not normal and you should seek medical attention. if your son is running a high fever you should seek emergency medical treatment. wishing you well!
my son has swollen lymph glands by his ears and down his neck