I am bit confused as your allergist is also an oncologist
and you need to figure out what he is board certified in - allergy or oncology?
The important investigation in this regard is a complete blood count
, LFTs, thyroid
functions, the ultrasound
reports and a FNAC report of the lump from the pathologist and reviewed by a Haematologist.
Supraclavicular lymph node swelling is a significant swelling that must be investigated in detail.
Her allegies and SLIT does not take precendence at the moment.