Delayed reactions? Help?

Posted on: Tue, 05/11/2010 - 11:54pm
Sal's picture
Joined: 10/15/2009 - 08:28

Hi there, I haven't posted for a while but I have come back with a question! I'm really not that careful with my peanut/nut allergy, I still try to avoid may contain products but since I've never had a big reaction from anything (other than direct peanuts!) I tend to be pretty chill about it.. I know, probably not good but..

So yesterday I went to the movies and half way through my boyfriend came back with Cadbury Mini Eggs.. they're like my favourite thing ever (he knows it lol) but my mom always tells me to avoid cadbury since they always always without fail give her a reaction.. but since I did eat them last month during easter etc. and didn't have any major reactions I thought nothing of it and ate them. That was around midnight I guess and I was fine. Then this morning I wake up to go to school around 5:30/6am and I'm like dying.. my stomach was cramping up like crazy, I had diarrhea and was close to throwing up. I went back to bed after my shower and slept for another couple hours (hard to fall asleep in pain tho!) and it's 10 now and I feel better. It was almost the same feeling I got when I ate peanuts a year ago.. BUT it was like 6 hours after I consumed the mini eggs?! Is it possible to have a delayed reaction to something like that, or is something else to blame for my feeling like death this morning? I've tried to think of another reason, but I can't come up with anything...

Thanks a bunch!

Posted on: Mon, 05/17/2010 - 10:45am
barbfeick's picture
Joined: 04/18/2009 - 05:48

Yes, you can have a delayed reaction - there is debate whether it is an "allergy" but I don't see why the debate about language. If someone has a severe reaction to a food or vaccine but it doesn't cause an immediate symptom, what does it matter what you call it? The following discusses delayed reactions to vaccinations:
"Delayed-type reactions occur hours to days after exposure.27 The longest possible interval between exposure and the onset of symptoms is not completely clear, although most immunologists agree that reactions may occur up to 2 to 3 weeks after exposure. Most delayed reactions are classified as type 3 hypersensitivity and are attributed to formation of immune complexes, although other less well-defined mechanisms, including T cell–mediated processes, may also play a role. The most common signs of delayed-type reactions are rashes, which may include urticaria, erythema multiforme, and/or maculopapular eruptions. Although urticaria and angioedema are generally thought of as manifestations of immediate-type reactions, they can occur in delayed reactions as well. In the context of a delayed reaction, this is likely attributable to non–IgE-mediated processes such as complement activation by immune complexes, but late activation of the IgE system cannot be ruled out. Angioedema may also occur, especially in association with urticaria or erythema multiforme. Although uncommon, arthralgias, arthritis,[arthritis is an uncommon reaction? How do you know that? Arthritis is very common. Few doctors would connect arthritis with a shot given two weeks beforehand - bfg] joint swelling, serum sickness, and Henoch-Schönlein purpura may occur, as can a variety of other hematologic, renal, and gastrointestinal manifestations...."
PEDIATRICS Vol. 122 No. 3 September 2008, pp. e771-e777 (doi:10.1542/peds.2008-1002)

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