Allergic to the world????

Posted on: Wed, 01/09/2002 - 5:04am
tynebaby's picture
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Joined: 01/02/2000 - 09:00

I would love to hear from an expert on skin testing. At 18 months old, my son had a positive skin test to peanut 3+, dairy 4+, and soy 1+. negative skin test to fish, shellfish, fish, wheat, eggs. My son is almost 3 1/2. We went in today for skin testing and he turned up a 4+ on all of these foods. Everything he was tested for came up a 4+. This makes no sense to me because he eats wheat, fish, eggs, and soy with no problems. We avoid peanut and dairy.
Is it possible that he really has developed an allergy to all these foods or do some kids just have sensitive skin and react to everything on the panel. Allergist also did a household panel and an environmental panel....everything on his body a 4+!!!! I don't get it! My allergist said that based on everything reacting a 4+ that it tells him nothing...he followed up with a blood test. Anybody have any great thoughts or input you could share with me. Thanks.

Posted on: Wed, 01/09/2002 - 1:27pm
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Joined: 05/28/2009 - 16:42

I have found that my PA son gets a raised bump or hive wherever he has been scratched. He gets very large welts when he gets something as basic as a mosquito bite. I was told that he has an excessive amount of histamine at the surface of his skin and thus the high sensitivity to even a scratch. If my son scratches one of these welts (they must itch) then he gets more and more welts and more and more scratching, etc.
I just have to tell him to stop itching or it will get worse. He is only 5 and is good to just leave the itchy feeling alone until it subsides. Anyway, I digress.
I just wanted to say that his skin prick reactions could be a result of lots of histimine at the surface of the skin. I think you'll be glad to have the blood test as they are clearly definative of the allergies present.
C&N's Mom
Alisa

Posted on: Thu, 01/10/2002 - 2:20am
Carefulmom's picture
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Joined: 01/03/2002 - 09:00

When they do a skin test, they are supposed to do a positive control and a negative control. The positive control should be positive, no matter what the results are to milk, eggs, peanuts, etc. and the negative control should always be negative. This should rule out the posibility that your son has really sensitive skin and is going to react to every scratch. So was the negative control negative?

Posted on: Thu, 01/10/2002 - 5:03am
anonymous's picture
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Joined: 05/28/2009 - 16:42

Sensitive skin will most definitely produce a false positive. My son "reacted" to the negative control (saline). The blood test results should help a great deal.
Take care,
Tammy

Posted on: Thu, 01/10/2002 - 5:08am
tynebaby's picture
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Joined: 01/02/2000 - 09:00

Thanks for the info. I get more info off these boards than from my doctors. The negative control or the food screen, household screen, and pollen screen were all 0(negative). When you say positive control, I am assuming that you are referring to the histamine that they did which measured 10mm flare and satellites. I must say that now I am really disturbed since the negative controls were 0(negative). I guess that would rule out skin sensitivity. The doctor did not tell me this. I wonder how my son can be allergic to wheat, eggs, and fish when he eats them with no problems. What is the difference in what a skin test tells you and what the blood test tells you. Which one is more reliable?

Posted on: Thu, 01/10/2002 - 5:10am
tynebaby's picture
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Joined: 01/02/2000 - 09:00

One other thing that I forgot to mention is that I was hoping my son just had sensitive skin because every time my husband doesn't shave and "whiskers" my son he breaks out.

Posted on: Thu, 01/10/2002 - 6:29am
BENSMOM's picture
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Joined: 05/20/2000 - 09:00

Back in October I took my son to see Dr. Robert Wood, who is a colleague of Dr. Sampson and one of the leading allergists and researchers in PA--he's also PA himself. Here's what he told me about skin tests.
-60-70% of positive skin tests are false positives, so only about 30% indicate a true allergy.
-in allergic people, the skin can have high IgE levels, even when the blood doesn't. Allergic people can test positive on a skin test to lots of things they aren't really allergic to.
-the value of a skin test is negatives are usually accurate.
Your allergist was right to order the blood tests and sounds like he knows what he's talking about. Don't worry about all those 4++s. In fact, I wouldn't have even had him tested for the foods he eats with no problem. That, after all, is the real test.

Posted on: Fri, 01/11/2002 - 4:22am
Rebecca's picture
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Joined: 08/23/2001 - 09:00

Ben'smom,
I have seen Dr. Sampson's name mentioned several times on this website, and it seems that in the sea of conflicting information about allergies, he is respected as an expert. Does he have a website or a book about allergies? I do not think there are any such knowledgeable experts in our area to consult regarding DD's allergies, and of course, we want the best information to base our decisions on, especially regarding testing, etc.

Posted on: Fri, 01/11/2002 - 10:35am
BENSMOM's picture
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Joined: 05/20/2000 - 09:00

Sorry, I don't know of any books or websites. Maybe someone else does?

Posted on: Fri, 01/11/2002 - 11:36am
Anna's picture
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Joined: 07/20/1999 - 09:00

Bensmom and others.
Just wanted to say that this is such valuable and helpful information for all of us. Proper diagnosis is difficult to come by, and real-world allergy info. just as challenging. (Allergists I've seen, for example, don't seem to have as much awareness of current knowledge and studies as members of this board!)
Thank you!!

Posted on: Fri, 01/11/2002 - 2:50pm
tynebaby's picture
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Joined: 01/02/2000 - 09:00

Well, I just got the blood test back for peanut on my son. I knew he had the allergy to peanut so the class 3 was no surprise. My son is almost 3 and a half and hasn't had a reaction since his first one at 11 months. I guess I was hoping he would outgrow it even though I know this is rare.
We are still waiting to get the blood test back on the other foods that he tested 4+ to on the skin test. Thanks everyone for your information. You have all been a great help. I pulled up more information today from Dr. Wood on other peanut topics after hearing about him from this board.

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