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What is oral allergy syndrome?

Paul M. Ehrlich, MD
Allergy & Immunology
Oral allergy syndrome or OAS is a type of food allergy classified by a cluster of allergic reactions in the mouth in response to eating certain (usually fresh) fruits, nuts, and vegetables, unlike the symptoms associated with food allergy generally, which affect multiple body systems, like the skin, respiratory, and digestion.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.