Pineapple allergy?

[neolara]

My dd was eating pineapple yesterday, and where the juice covered some of the eczema on her hand, her hand got very red and developed a rash like she'd been stung by nettles (raised, white lumps). She also said it was sore. However, the rash didn't then develop into bigger hives and didn't spread to non-eczema covered parts of her hands or to anywhere else in her body. She didn't seem to have any problems eating the pineapple and there was no obvious swelling around or inside her mouth. Do you think this sounds like an allergic reaction or just an skin irritation?

We've were at the allergy clinic last week as she is allergic to peanuts and was being tested for a raft of other things, which she thankfully did not react to. She has previously had a similar, but much more pronounced reaction to raw tomatoes (with big alarming hives) but she she has now passed 2 skin prick tests to tomatoes. Despite this, we were advised to avoid raw tomatoes for 18 months and then slowly reintroduce them. Do you think we should avoid pineapple as well?

Maybe it was just the acid in the pineapple on already irritated skin but I think if she were mine I'd be inclined to avoid raw pineapple for a while.

I've read a published clinical paper that says that a dust mite enzyme/allergen (Der p1) found in mite droppings can cross react with pineapple. Please check this out with your allergist. Der p1 is a powerful digestive enzyme similar to papain, a tenderiser used in the food industry.

I can find the paper for you if you wish. Lots of people are allergic to Der p1

Could be urticaria? Which is what my son has. Means the body produces too much histamines so when exposed to foods that are high in histamines it makes them flare up in hives.

Pineapples and Tomatoes are both trigger foods. Can you LO eat strawberries ok?

Franki my ds also reacts to tomatoes, pineapple and strawberry seems to b worse when he has cold etc due to the histamines being produces

I had a huge reaction to pineapple when I was in secondary school (latex allergy so tropical fruits can be dodgy anyway). We mentioned it to my allergy woman who said that the problem with testing for pineapple is that the stuff they use for skin prick tests is more like tinned pineapple and the enzyme present in fresh pineapple which causes the reaction isn't in tinned pineapple (if that makes sense) so you can be allergic to fresh pineapple but not tinned, and still have a negative allergy test result.

I'd avoid raw pineapple just to be on the safe side. Fortunately apart from in those little fruit packs you get in supermarkets it is relatively easy to do (compared to other foodstuffs).