### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My 2 year old has had enlarged lymph nodes at the base of the back of his head/neck area since he was an infant. Each time I ask his pediatrician they tell me he just has larger then normal lymph nodes but it scares me because one minute they are large and the next minute they seem to go down but never to where they are unnoticeable. Im scared and want to have him looked at by a specialist but Im not sure what type of specialist he needs to see. Any suggestions on what could be causing this or the type of specialist?

### output:

HI, Dear, Thanks for the query from you for your enlarged lymph nodes in the back of head / and on the neck side areas since his infancy for last 2 yrs.1-I feel concerned that you are serious to know why these lymph nodes are enlarged than others.?2-In my opinion these enlarged lumps are harmless as your pediatrician has pacified your worry.3-These lymph nodes indicate mild scalp infestation/ infection with ? Repeated throat infection-which is another probability, which needs to be suspected and treated.4-But as you haven't mentioned any nasal discharge or else, another possibility to suspect is the -T.B.lymph node hyperplasia, which may be a sign of the reactive immunological response to mild infection, which needs to be ruled.5-Hence I would advise a second opinion from a chest/or general physician who would do -CBC, X-ray chest, PPD skin test-(Contour TES). This would lead you on your worry which you expressed about lymph nodes enlargement.  5-a-A Chat Doctor. 6-Hence I would advise ER Chest/or general physicians' opinion.7-Hope this would resolve the causative worry of the patient in question. If treated on this line, the fearing patient, should not worry you much.8-Hope this would solve your worry of the enlarged lymph nodes of your baby of 2 yrs.9-Wellcome to Chat Doctor for any more query.