Neg RAST & Neg SPT - should we challenge?

Posted on: Thu, 01/05/2006 - 10:51am
sherkelsey's picture
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Joined: 08/19/2004 - 09:00

I have been reading various threads from those of you who have a Neg RAST & Neg SPT and see confliciting results. My son, who is 3, had a few different exposures to peanut at 16 mos and broke out in hives around his face all 3 times. He had a SPT at that time and was a 4+, then at 2 he had the RAST and was Negative and now at 3 he had the RAST redone and was negative again, so the Dr. repeated the SPT and it was negative. HOWEVER, my son's face did become very flush. The Dr. said it meant nothing, and wants to do a peanut challenge in 2 weeks, but I am very nervous. What are some of your opinions? Do you think the flushed face meant something? Would you go ahead with the food challenge?

Posted on: Thu, 01/05/2006 - 11:26am
dgood's picture
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Joined: 03/27/2004 - 09:00

Personally, I think I would choose to wait until he is closer to 5 to test. From what I've read, the immune system doesn't fully mature until that age. Better safe than sorry in letting him get to a point where he can better tolerate the food.
I don't know why some allergists are in such a rush to food challenge. My 2 year old daughter had a low walnut score (0.10)and the nurse called me with his message that he wanted to do a food challenge. I was shocked, and of course said no.
It's a personal decision, some do very well, others have different outcomes...

Posted on: Thu, 01/05/2006 - 11:35am
dgood's picture
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Joined: 03/27/2004 - 09:00

By the way, congratulations, the negative scores must have you jumping for joy!!!

Posted on: Thu, 01/05/2006 - 11:37am
Schnook's picture
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Joined: 10/07/2003 - 09:00

Hi.
My DS had a negative RAST and a negative skin test at the age of 4.5 and we elected to wait until he was 5.5 to challenge (which he did pass). Our reasons for waiting included that we wanted his immune system to mature a bit more and frankly because I was not ready, the idea of feeding peanuts to my son scared me half to death. We it came time for him to enroll in a new school we did the challenge.
Each family has to decide what works best for them. Good luck.

Posted on: Thu, 01/05/2006 - 11:59am
becca's picture
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Joined: 05/22/2001 - 09:00

My(dd's) allergist will not food challenge before the age of 5. I would not have had her challenged before that had the opportunity presented itself, which it did not. becca

Posted on: Thu, 01/12/2006 - 12:20pm
sherkelsey's picture
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Joined: 08/19/2004 - 09:00

Has anyone ever had a flused face as a reaction to peanut or any other allergen? Or during the skin prick test?

Posted on: Sat, 01/14/2006 - 5:26am
jeancbpugh's picture
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Joined: 03/17/2001 - 09:00

Quote:Originally posted by sherkelsey:
[b]Has anyone ever had a flused face as a reaction to peanut or any other allergen? Or during the skin prick test?[/b]
My son did. Flushed face, red ears & skin behind ears, and red arm pits were the first sign of anaphylaxis at his food challenge in December.
If I were you, I wouldn't do the food challenge.
See my Food Challenge Failure post in the Main Discussion board (not sure how to link)
------------------
Jean
DS allergic to peanuts & watermelon (9/2005 neg RAST peanut & watermelon; 9/2005 skin test neg peanut, positive watermelon; 12/2005 peanut food challenge=anaphylaxis)
other DS with pollen, animal, dust allergies

Posted on: Sat, 01/14/2006 - 7:40am
julieneaman's picture
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Joined: 01/11/2004 - 09:00

So happy for you about the neg. results. Your ds sounds similar to mine. He had a neg rast & neg spt so we food challenged this summer. He is also 3. He failed the food challenge w/ just the tiniest bit of peanut butter. Our dr. said we could challenge again in a year, but we decided to wait until he's at least 5 for 2 reasons. I don't want to see him like that again any time soon. And, I think he'll have a better chance of passing if we wait. Good luck whatever you decide.
Julie

Posted on: Sat, 01/14/2006 - 10:45am
becca's picture
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Joined: 05/22/2001 - 09:00

Actually, the flushing was the major immediate thing I noted with dd when she had her most dramatic reaction(In hindsight, she was showing allergy, but we were missing it). Following that, she had quite ruddy cheeks and watery eyes and very itchy eyes. There was a dryness/eczema type crustyness to the cheeks for days afterward. becca

Posted on: Sat, 01/14/2006 - 11:08am
momma2boys's picture
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Joined: 03/14/2003 - 09:00

If you look at this chart, flushing is listed as a symptom of anaphylaxis.
[url="http://pediatrics.aappublications.org/cgi/content/full/111/6/S2/1601/T2"]http://pediatrics.aappublications.org/cgi/content/full/111/6/S2/1601/T2[/url]

Posted on: Sun, 01/15/2006 - 9:09am
jeancbpugh's picture
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Joined: 03/17/2001 - 09:00

Quote:Originally posted by momma2boys:
[b]If you look at this chart, flushing is listed as a symptom of anaphylaxis.
[url="http://pediatrics.aappublications.org/cgi/content/full/111/6/S2/1601/T2"]http://pediatrics.aappublications.org/cgi/content/full/111/6/S2/1601/T2[/url] [/b]
Wow, thanks for the link to the chart. I've printed it for our school nurse.
------------------
Jean
DS allergic to peanuts & watermelon (9/2005 neg RAST peanut & watermelon; 9/2005 skin test neg peanut, positive watermelon; 12/2005 peanut food challenge=anaphylaxis)
other DS with pollen, animal, dust allergies

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