hello and welcome to HCM,
I have understood your concern about the swollen glands in the ear/ neck area of your son.
In this age the swollen glands can be due to many causes and since you mentioned that he had a cold
, I would assume it may be a result of that infection. These swellings usually take a couple of weeks to disappear completely and you should definitely wait for them to do so.
Meanwhile have an ENT consult to know the status of his tonsils which is also one of the leading cause of infections in this age group.
If the swelling does not subside then you may consult your ENT again so that he can advice tests such as FNAC or CT to get to know the problem better and give you a directed treatment.
take care and give your child only warm fluids
Dr Sriram Nathan
ps: His teething
is usually unrelated to the glands or lymph