Oral Allergy Syndrome

Definition

Oral allergy syndrome is an allergic reaction in the mouth and throat that occurs after eating certain raw fruits, vegetables, or nuts.

Scientific / Technical Definition

Oral allergy syndrome (OAS), also known as pollen-food allergy syndrome, is a form of contact allergic reaction caused by cross-reacting allergens found in both pollen and raw fruits, vegetables, and some tree nuts. It is characterized by itching and swelling of the mouth, face, lip, tongue, and throat immediately after eating the trigger food.

Benefits

Examples

• Apples
• Cherries
• Peaches
• Cucumbers
• Kiwi
• Carrots
• Hazelnuts

Additional Information

• Known issues: Oral allergy syndrome is usually mild and rarely causes severe symptoms. In some cases, cooking the foods can eliminate the allergenic proteins and prevent a reaction.

Related Terms

• Pollen Allergies
• Food Allergies
• Anaphylaxis

References

• Oral Allergy Syndrome
• Pollen-Food Allergy