My little kid gets a rash when she drinks orange juice.

Well, oranges and tomatoes are both fruit (tomato is not a veggie for all you guys ready to argue with me, LOL) so maybe your family has a predisposition for allergies to fruit. It may not be the same fruit, but it is in the same category.

I've heard of kids who couldn't eat tomatoes but not orange juice. It makes sense though...anything that had high acidity would cause similar reactions. My problem is with whole apples. I'm fine if I cut it in pieces or drink the juice but if I eat one whole the juice runs on my chin and causes a breakout. It's just a skin reaction to the contact. Some kids grow out of allergies, some don't. My youngest daughter couldn't drink milk or have anything strawberry related when she was little but know she's fine with them both and they're among her favorites.

Both oranges and tomatoes are high in salicylates. Juices have an even higher concentration than the plain fruit; so she may only be mildly sensitive at THIS time. Here is a chart with the salicylate concentration in various foods. http://users.bigpond.net.au/allergydietitian/fi/sal.html Salicylate sensitivity in children is SOMETIMES outgrown or it can get worse as she gets older. I am salicylate sensitive; so this is one that I am familiar with myself. Most doctors in the US are unfamiliar with this condition; but, it has been studied extensively in the UK, Australia, and New Zealand. IF you think this might be it, just type "salicylate sensitivity" in any search engine OR let me know and I will give you some links I have.

If your brother has experienced the same type of ailment then it's likely that it's something that is common to your family. What you need to determine, I guess, is is your daughter allergic to only orange juice, or is she allergic to all types of acidic foods, such as other fruit juices like apple juice, tomatoes, etc. Before experimenting at home, I'd see your pediatrician to hear what he/she has to say about it. After all, what she's experiencing might be uncomfortable and you don't want to put her in pain unnecessarily.

Could they be canker sores? These emerge in reaction to things like orange juice. I guess your doctor would know.

I have the same problem with fresh oranges, tomatoes, and bananas. It is definitely as ascorbic acid allergy. I am able to drink low-acid orange juice, and a few tomatoes in a salad or something. Fresh bananas are out of the question, so I buy the dried kind. It may improve as she gets older, but she will still have to keep from eating too much at one time or too many days in a row. We have to ascorbic acid in some form, so you should experiment with the lower acid fruits and juices. White grape juice has the lowest acid content of all the fruit juices.

You just never know what you can be allergic to. Me and my brother had minor allergies to certain foods too that were a little off the norm. He was allergic to peach fuzz, he could eat canned peaches or pealed peaches with no problem but if he ate the fuzzy skins he would break out with a rash all over his behind. I was allergic to mangos and buckwheat as a kid. I got the same little bumps all around my mouth if I ate mangos. Buckwheat would make me throw up. Fortunately I no longer have the allergy to buckwheat but haven't had the guts to try mangos again. So sad too because I love mangos! As an adult I've developed a couple of strange very minor problems with certain foods that I didn't have as a kid. Swiss cheese, which I love, now makes the whole inside of my mouth itch really bad. If I eat too much bread I get really bad heartburn. High citrus fruits (oranges, lemons, limes) also gives me heartburn if I eat more than a couple of bites. So there's no telling what can give you a problem at different times in your life.