Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain itching of the roof of the mouth is most probably due to
allergic reaction to something which can be other than grapes and is unknown to you as if it would be due to grapes it would have subsided by now..
It may be allergic reaction to some tooth paste ingredient or mouthwash, at times cinnamon can also lead to itching of the roof of mouth..
You should consult an Oral Physician and get evaluated and if required he can advise you get a
blood test done to rule out the cause of the allergy as there must be
antibodies present in the blood against the allergen by now and can be ruled out that what is causing allergy..
The best way to prevent further outbreak of symptoms is by avoiding exposure to allergen and for relieving the symptoms you can be advised to anti-allergens like Allegra or
Claritin..
Gargle with a
steroid containing mouthwash can also help..
Hope this information helps..
Thanks and regards..
Dr.Honey Nandwani Arora..