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

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.
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.
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.
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.

Related Questions

My 16 year old daughter was recently diagnosed with oral allergy syndrome. Will a daily regimen of local honey help resolve her allergies?

Avoid cause. http://www.webmd.com/allergies/features the basic rule: if a food makes you uncomfortable, don’t eat it! cooking may help. It often breaks down or alters the trigger proteins so that the immune system doesn't target them. Peeling fruits such as apples may also help some people, because most trigger proteins are in the peel. Canning also breaks down those proteins, so canned fruit may be an option. Read more...
No evidence. Oral allergy syndrome is caused by cross reactions between pollen (causing hay fever or allergic rhinitis) and fresh fruit. According to the natural medicines comprehensive database, there is insufficient evidence that one tablespoon of honey (any form, including unpasteurized) helps allergic rhinitis better than placebo. Therefore i would expect similar results with oral allergy syndrome. Read more...
No. Bees collect pollen, but not from the plants that cause typical allergy problems. Oral allergy is most often caused by cross-reactivity of some raw foods with pollens like ragweed, birch tree, mugwort (a weed), or grass. These pollens are unlikely to be in honey. Read more...