Should I see the doctor about this reaction or try a larger amount of peanut butter?

[HonorMatopoeia]

Dd1 had a bad time with exzema (I can never spell it properly!) as a baby and I have suffered from various allergies throughout life so during pregnancy was advised to avoid peanuts.
I've been really apprehensive about trying her with peanuts and have left it for ages as she is now 3. I was going to do the Nigella Lawson approach to all this and park in the hospital car park and feed her a peanut butter sandwich. But, today, without thinking (crappy mummy emoticon!) I let her have a nibble on my peanut butter on toast. It was a tiny, tiny part of the crust that she nibbled and there can only have been the weeniest smidge of peanut butter on it.
However, after she'd had it I caught her scratching her tongue and even trying to wipe it with a tissue. She said it was itching.
Now, do I abandon all attempts to try her with peanuts or was it a fluke? Should I bother the doctor and if I do, can I ask for an allergy test just for peanuts or will he laugh me out of the surgery?
Sorry for the waffling and TIA

Thank you so much - it is great to learn what works.

Cheerio
Alison

At Guys when DS1's nut, milk and egg allergies were concerned we were advised that if a food hat no nut/milk/egg ingregients but said "may contain traces of nuts/milk/egg" that we could go ahead and give it to him.

HOWEVER we were to review this if anything ever happened when he ate something marked like that.

My understanding is that it is only some people who are so sensitive that a microscopic trace of an allergen can cause a reaction. Most people are fine.

My DS1 has had some reactions to foods that are not supposed to contain milk (his worst allergy). But it has never been cross-contamination, it has always been an undeclared ingredient.

apperently people who are allergic to peanuts can also be to broadbeans..its something to do with the mould spores as they grow ..im sure someone will come along and explain better but iwas told by a mother whose child is allergic to both

peanuts are legumes, 5%of peanut allergic people are allergic to beans, due to link.
peas are linked, as well as chick peas, kidney beans , baked beans etc.

odd interesting fact ( although not for this thread)
kiwi allergy is linked to dustmite allergy and tree pollen allergy.

as for allergy getting worse, yes , thats a myth.

What you see each time is different,................let me explain.

How the reaction develops depends on outside factors,
like health before accidental ingestion.

so if child/adult has uncontrolled asthma

or is coming down with a virus,

or if woman is having a period

or drinking alchohol (which speeds up absorbtion of food in gut)

also the amount ingested.

or recently recovered from an illness, say chest infection or recent allergic reaction
body still recovering so to speak.

exercise can speed up reaction and push it further.

Other environmental allergies, taking toll on person before ingestion.

For an example of my sons high risk time,
for life threatening reaction to food, other factors have to play,
allergic people have a higher than normal histamine level, so it doesnt take much more to over dose in to anaphylaxis.

if it was tree pollen season, and the dustmite level was high (centrol heating)he would have a greater reaction to a food allergy and /or dog reaction.
If above , added with cold/ any mild virus, again, high risk for anaphylaxis.

Dog allergy, again with the tree pollen and dustmite, and in room in which a dog had previously been in , can result in severe reaction.

( car that have had dogs inside are avoided.)

you also dont get the same physical reactions every time, allergic bodies can run the whole gauntlet of allergic reactions,
for instance, over the years we have had many mild hive reactions, but only twice had

v large total body hives ( joining all over)
other symptoms

large lip swelling
V&D
unable to swallow.
dizzyness
non stop coughing

last three symptoms serious, as its internal reactions that are the most important to note, and take medical steps to stop progressing further.

total sons allergies to date

peanut
all beans
raw egg
kiwi
yeast extract
dog
cat
tree pollen
dustmite

outgrown
cooked egg
hay fever
tree nuts