Don't ditch the fresh fruits and vegetables because you've been diagnosed with Oral Allergy Syndrome. The itchy mouth is a miserable side effect of eating. Pollen allergies can trigger reactions to fruits and vegetables. The condition — known as oral allergy syndrome — can Eating And Health. There are things you can eat that may ease your allergy symptoms. No food is a proven cure. But fruits and vegetables are good for your whole body. They're full. Pollen allergies can trigger reactions to fruits and vegetables. The condition — known as oral allergy syndrome — can Eating And Health. I can't eat apples. I also can't eat peaches, plums, pears, cherries, carrots, or celery. If I do, my mouth immediately feels like it's on fire, and my. That bane of the fruit-loving, Oral Allergy Syndrome, has kicked in. is an allergic reaction to certain proteins in a variety of fruits, vegetables and nuts. OAS sufferers react to raw fruit, but are usually able to eat the same food . Healthy Home · Pets · Dust Mites · Fragrance · Drug Allergy · Skin Allergy.