Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain although you are tested negative for allergies but the symptoms of itching in ears, eyes, gums and tongue are appearing typically like
Allergic reaction..
In case if
sinus infection is the diagnosis it mostly represents with pain and congestion..
I would suggest you to consult an Allergist and get evaluated and a thorough clinical evaluation and investigations like Allergic tests along with PNS VIEW
X RAY or
MRI scan can help in diagnosis and treatment can be planned accordingly..
You can be advised to take a course of antibiotics, anti allergics,
steroids,decongestnats and steam inhalations, saline nasal irrigations and use a humidifier in your room..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..