It likely won't return to its previous size, but will likely shrink down near that on the next few months (not weeks), if it doesn't or your concerned then make a non-urgent appointment with his doctor
3 year old male with unilateral swollen cervical lymph node, urgent?About 5 days ago I noticed that a lymph node on the right side of my sons neck was quite enlarged. When I palpate, it doesnt seem to hurt him, it is not mobile and feels more rubbery/hard. I would estimate it is 2-3cm across. He had Impetigo 2-3 weeks ago but it has been resolved for a week and he didnt have swollen lymph nodes at the time. He does not have any symptoms of illness currently and there is no one in the home sick. He is eating well, no recent weight loss. Is this something that should be evaluated within the next few days or is it fair to watch for 2-3 weeks to see if the lymph node goes back to the usual size? My son is 30 pounds, has controlled epilepsy and takes Keppra. He was followed by hematology for 1 year previously due to unexplained neutropenia. Has not had blood work in 8 months.