A person with allergy to pollen can manifest itching of the mouth, palate and inside the ears when eating certain fruits or vegetables. This condition has been termed “Pollen-Food allergy syndrome”. It is important to understand that itching of the mouth termed “Oral Allergy Syndrome” can also be an early manifestation of a potentially dangerous food allergy. Thus one should seek medical attention with a qualified Allergy & Immunology specialist.
The figure below lists some of the known cross reactivity of pollen with fruits/vegetables. By all means, this list is not all inclusive as a person can react to other foods not on this list.