My daughter was diagnosed with oral allergy syndrome: are the symptoms year round and permanent?

Food allergy: Oral allergy syndrome is due to a cross-reactivity between plant proteins from pollen and fruits or vegetables. When a child or adult with pollen allergy eats a fresh fruit or vegetable, the immune system sees the similarity and causes an allergic reaction. Many patients with oral allergy syndrome can eat the same fruits or vegetables when they are cooked. Cooking changes the proteins.

Food Allergy: Oral allergy syndrome is due to a cross-reactivity between plant proteins from pollen and fruits or vegetables. When a child or adult with pollen allergy eats a fresh fruit or vegetable, the immune system sees the similarity and causes an allergic reaction. Many patients with oral allergy syndrome can eat the same fruits or vegetables when they are cooked. Cooking changes the proteins.

Usually: Relatively common oral allergy syndrome (oas) occurs when the immune system mistakes one protein for another. In oas seasonal allergies to birch pollen result in itchy mouth & throat whenever certain raw fruits & vegetables are eaten. Most common are apple, carrot, citrus & peach. Ragweed & melon have a similar association. No symptoms occur if the foods are cooked. The condition is persistent.

It is variable.: I have practiced in many areas of the us, caribean and europe. Oas can go away after moving to a place without the pollen causing it. That is, away from ragweed or birch. It takes 5-10 years without exposure. Allergy immunotherapy to white birch was not effective. But, a mixture of paper/red/white is effective at a high doses (strength of 1/5 of your allergy solution.) share this with allergist.