Adolescent with enlarged lymph nodes

My 12-year-old son has large lymph nodes in the right side of his neck.  I have had him to the doctor twice and she has treated him with Keflex then Augmentin.  He also had some sort of strange inflammation on his scalp.  The second time she did blood work which she said was normal - and sent him for an ultrasound which showed many large lymph nodes, but two that were 1 cm or larger which the radiologist called "suspicious."  The radiologist suggested a follow up ultrasound after the antibiotic is finished, but the doctor said the ultrasound was not concerning to her (I guess because the blood work was normal).  In the meantime the antibiotic is finished and he still has the large nodes.  He also has been complaining occasionally of intense itching which I have to give him Benadryl for.  I did not connect this because he has had problems with his skin since he was little (ezcema (eczema), hives, etc).  He has also complained of a sore throat in the morning.  Should I be concerned or should I wait it out?

[Dennis MD]

Hi.
The enlarged cervical lymph nodes could be due to the scalp infection you mentioned.  Oftentimes, even after treatment of infection, the lymph nodes do not regress in size.  If there is progressive enlargement of the lymph nodes, associated with symptoms of fever, weight loss, fatigue, sweating, etc., you should bring your son to his doctor for proper management.
Good luck.