reaction to mayo?

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We have been visiting my grandmother over thanksgiving and my son did fine at the big meals but at lunch two days in a row had hives on his face after eating a ham sandwich. Both times I made it on bread I brought but I borrowed my grandmothers mayo. We usually use miricle whip but I checked the ingrediants and there was no sign of his allergens (peanut, soy and milk). He also had potato chips and his rice milk. I didnt see any peanuts in the house the whole weekend but there were pecans in a few dishes. I know she has peanut butter somewhere but it was put away. Any ideas?

One other thing. When he was tested 18 months ago he did get a level 1 RAST for egg but he never reacted to it and eats eggs all the time so we (with the allergists agreement) feed him eggs. ------------------ Lalow James 3yrs, NKA Ben 2 yrs, PA and MA and SA

[This message has been edited by lalow (edited November 27, 2005).]

On Nov 27, 2005

It is possible that before your arrival, she had used the same knife for a PB sandwich, then for the mayo. I'm sure there are other possibilities, but this is the one that popped into my mind immediately.

On Nov 27, 2005

Here's a thought. My ds is very allergic to eggs, but can eat them cooked in items. He cannot however eat mayo. I would guess it is the eggs.

On Nov 27, 2005

As far as using the knife for pbutter then mayo I dont think it is very likely. She lives alone so makes sandwiches for just one person. I cant see her combining the two (although some do). I did stay clear of the jelly for that reason. He eats scrambled eggs alot and doesnt miricle whip have eggs in it? I will look into that though. Maybe they are prepared differntly. Come to think of it he always gets blotchy when we eat at a sandwiche place here that uses mayo. I had about decided not to go there again thinking they must be working on contaminated work surfaces or something.

------------------ Lalow James 3yrs, NKA Ben 2 yrs, PA and MA and SA

On Nov 27, 2005

My nfa son gets a very red, blotchy rash around his mouth from several foods, including mayo, creamy dressings such as ranch or blue cheese, and ketchup. I've had him tested twice and both times everything came back negative. The allergist says he just has very sensitive skin. It looks basically the way hives look right before the actual blisters appear. So it is possible to get a hive-like rash without it being a food allergy.

Lori

On Nov 30, 2005

Lalow, I'm sure all brands are different, but my mayo has whole eggs and egg yolks listed and the salad dressing(not Miracle Whip brand) only has egg yolks. The part of the egg my son is allergic to is the white. That may be the difference.

On Nov 30, 2005

It's interesting you say that, Momma2boys. I've always wondered about an egg allergy with my son because he has complained of tingling in his mouth when he eats undercooked eggs. He has differentiated the white from the yellow - but now I can't remember which one he thinks bothers him. His rast was negative, though. Anyway, I had talked to our allergist, and she said that it's the same protein in the yolk and the white, just more concentrated in one (and I think, but could be wrong, she said the yolk) and so they only test for that one protein. I thought I'd heard they were different proteins. So fuzzy to me.

On Nov 30, 2005

I was going to postt the same as momma2boys There are whites in reg. mayo but not M/Whip. These raw eggs could be causing your problem.

On Nov 30, 2005

I am going to have him retested soon after his 3 year dr. visit and will look into egg again. I think you all might be right cause I really think it was the mayo cause everything else was familier. I am not sure of the brand. I guess my question now is does this make a difference or do I just keep him away from mayo. He eats scrambled eggs several times a week with not problems.

------------------ Lalow James 3yrs, NKA Ben 2 yrs, PA and MA and SA

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