Hi welcome to Health care magic forum.
Thanks for choosing H.C.M.Forum.
Your 15 years son had left upper abdominal pain
, while swallowing. there was a knot on the left side of his neck which was sore to touch, that has come down today.he is also complaining of dizziness
It appears to be the T.B.gland (may be) as it has changed in position and structure, and probably caused pressure on the esophagus
, and causing pain. or it may be gastric irritation, or pancreasitis pain.
It is our assumption only, i advise you to consult a gastroenterologist
for diagnosis and treatment. You may have to get the M.R.I. gastroscopy besides other routine tests for confirmation.
Wishing for a quick and complete recovery.