Birch Pollen and Fruit: How Oral Allergy Syndrome Happens

What Is Oral Allergy Syndrome

Some people with pollen allergy develop itching or stinging in the mouth and throat, or mild swelling of the lips or tongue, after eating certain fresh fruits, vegetables, or nuts. Symptoms are often clear with raw foods and ease after heating. This is called oral allergy syndrome, and it is usually linked to proteins in pollen and plant foods that are similar in structure.

Common Cross-Reactions

For example, people with birch pollen allergy may feel discomfort when eating raw apple, cherry, peach, carrot, celery, and similar foods. The exact links differ from person to person. They need to be judged based on your own reactions and a doctor's assessment. Do not guess on your own and cut out a wide range of foods.

What to Do

• Record the type of food, whether it was raw or cooked, and the symptoms each time an episode happens
• When mouth discomfort appears, stop eating right away, rinse your mouth, and watch how symptoms change
• If you have throat tightness, trouble breathing, hives all over the body, dizziness, or similar signs, treat it as anaphylaxis and call 120 right away
• When you see a doctor, tell them about your pollen allergy history and the suspected foods, so the doctor can assess whether further tests and dietary advice are needed

This article is for general information only and not medical advice. Please follow your doctor's instructions.