What Is Oral Allergy Syndrome?
If you’ve ever had a tingly or itchy feeling in your mouth after eating raw fruits or vegetables, you may have a condition called oral allergy syndrome. Oral allergy syndrome, or OAS, occurs in people with seasonal allergies to pollen. The condition usually develops suddenly and often involves common fruits and vegetables that have, in many cases, been eaten without problems for years.
Symptoms of OAS are typically mild. The reactions occur when the body’s immune system mistakes proteins in fruits and vegetables for pollens to which the person is allergic. This type of reaction is called cross-reactivity.
For many people with oral allergy syndrome, symptoms are worse in the spring and fall—when seasonal allergies are at their worst. Avoiding, peeling, or cooking the offending fruits and vegetables may help reduce or prevent the allergic reaction.