I have it

. It's so frustrating. Mine did not develop until I was about 14. I discovered it while eating a caramel apple from the carnival and my throat and behind my ears started itching. Then I ate some cherries and developed bumps all over my lips. After trial and error, I've discovered I can't eat apples, peaches, pears, cherries, apricots, plums, basically everything that grows on a tree, unless it has been cooked. Recently (within the last 5 years), I've also developed a slight allergy to strawberries (I can't even eat a bowl of special K with red berries) and some nuts, pecans, walnuts, and allmonds in particular. I don't have a problem with most vegetables, but I eat most of my vegetables steamed, so that takes care of the cooking, and still maintains most of the nutritional value.
It is incredibly frustrating that all of the "healthy eating" guidelines include one or more of my banned foods, and usually nuts I can't eat either. So what I do is eat lots of the fresh fruits I can have. I *can* have bananas, melons (watermelon, canteloupe, and honeydew), grapes and oranges. I also find buying organic helps in some way.
Maybe it is the different soil or the lack of pesticides? Then the fruits I can't eat, I do canned. Applesauce with no added sugar, canned pineapple or tropical fruit in their own juices, etc. It's better than not eating fruit at all, I figure.
I hope this helps a bit, if only to know that you are not alone! People look at me like I have two heads when I tell them I am allergic to fruit!