The frustration of delayed allergies

I’ve posted previously about allergies v.s. intolerances, my daughter has delayed (non-IgE mediated) allergies which makes her atypical as well as atopic. So far I know that she’s allergic to soy, red kidney beans, cannellini beans, and bee stings.

The problem with delayed allergies is that they don’t show on the skin prick or blood tests. They are also really difficult to diagnose observationally because the reaction can take anywhere from 2-36 hrs to become apparent. Can you imagine what it’s like trying to think about everything your toddler’s eaten, drunk, been offered, or might have been come into contact with over the past day or two? Soy is an incredible amount of things (a future post there!), overwhelmingly so, and is easy to be accidentally exposed to so it can be difficult to determine if there are more allergies lurking beneath the obvious one. There’s definitely something else though that’s triggered our latest cycle of misery, distress, tantrums, sleeplessness, rashes, and itching.

Could it be the fresh tomatoes we’ve been eating? I’ve just been reading about salicylates, and tomatoes are one of the foods that are high in this naturally occurring chemical (which can cause allergic reactions in those sensitive to it).

We haven’t eaten cucumber for ages but we have been this week. Maybe she has an allergy to cucubits.

We’ve visited farm-type parks twice this week. Maybe she’s allergic to cows. Or has a plant/pollen allergy – there were long dry grasses in the paddock yesterday.

I’ve had a welt come & go today which has has me rethinking the red rash on my legs (which I thought was a graze). We were both busy climbing and clambering around a beautifully picturesque Moreton Bay Fig (Banyon) tree yesterday.

moreton-bay-fig

Moreton Bay Fig tree

I’ve heard of Birch tree and grass pollen allergies during my research so far but I had to google this one. It turns out that the tree can cause an allergic reaction due to “the presence of psoralen and bergapten, which have the ability to produce phototoxic dermatitis.” That could certainly be a real possibility in our current list of suspects and we don’t eat figs so there’d be no prior warning. Unfortunately, the only way to test the theory is to go back and give the tree a good hug which I have no inclination for us to do (at least not till after we’ve seen the paediatrician – who may counter that’s a more direct option than beginning more food elimination challenges).

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