Oral Allergy Syndrome Symptoms

Oral allergy syndrome symptoms typically sets in within minutes but can occur up to an hour after eating an uncooked trigger food such as fruit, vegetables, or nuts (click here to see food list). They are usually mild reactions restricted to the lips and mouth but in rare cases progress to severe reactions such as an anaphylactic reaction. The most common mild reactions are:

  • Itching and burning of the mouth, lips, tongue, and throat
  • Watery, itchy eyes
  • Runny nose
  • Sneezing

Other more severe and less common reactions are:

  • Rash or hives
  • Swelling of the lips, tongue, or throat
  • Vomiting
  • Diarrhea
  • Indigestion
  • Abdominal cramps
  • Wheezing


Disclaimer: The information contained in this site is for educational purposes only, and should not be used as a substitute for a licensed physician. Please see your physician for diagnosis and treatment of any concerning symptoms or medical condition. Click here to read the full disclaimer.


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