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Can I give a person an allergic reaction at a very specific spot in a tissue? And if so, how accurate can i get?

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You might want to look at the patch test. Though I'm a little concerned by the motivation of this question. –  Rory M Feb 14 '13 at 16:29
    
Thank you this did help :) Lets say I know a persons allergic reactions will it be possible to do the following? and if so can I change the hypersensitivity level reaction in this proses? –  user3085 Feb 16 '13 at 8:48
    
I don't have enough information to make a full answer, but I'm allergic to mangoes. When I eat one, the parts of my skin that the mango touched will get a bad rash, but anywhere it didn't touch will be unaffected. –  Orcris Feb 17 '13 at 5:03
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1 Answer

Depends on the kind of allergic reactions you want to create. If your target tissue is skin epithelium sure you can.

That's actually the way the skin allergy test is all about: The physician tries a wide variety - last time I did it were 28 well known kinds - of substances in liquid form (drops). If an allergic reaction is caused, the physician takes note. Even very small quantities can cause allergic reactions.

These tests are usually made in a secured environment (physician's office, hospital, etc) at a very low level which most of the times, if result is positive will cause just an irritation. The level of irritation will be self-explanatory, so even a non trained patient can understand what is going on.

Not sure if that what you were asking though.

Best Regards,

pa

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Funnily, the severity of the reaction does not correlate to symptoms the allergy might cause... of all allergies I have, dust mites gave the weakest skin prick reaction; but it's the only symptomatic allergy I have. The prick test can vary a lot, depending on the purpose; I don't think there's a standard set of allergens they test, apart from ready-made allergen "sets" such as "grasses" or "trees". –  Armatus Feb 14 '13 at 11:30
    
Well, yeah I was referring to allergies about trees, grasses, dust, etc. But sure, allergies are not 100% understood anyway. –  atmosx Feb 14 '13 at 15:25
    
Thank you this did help :) Lets say I know a persons allergic reactions will it be possible to do the following? and if so can I change the hypersensitivity level reaction in this proses? –  user3085 Feb 16 '13 at 8:49
    
You say "do the following", but there's no "following" sentence, so I don't know what you mean by "do the following". :-) - The hs reaction usually is "linear" but might have more than one variables, so I'd say that it's kind of dangerous to try it out on your own... Better visit a physician. –  atmosx Feb 16 '13 at 11:50
    
as in following i mean the patch test mentioned earlier :) and i wont this is a part of sum recerch Im douing ill go to the universality to figer out more soon thank you. –  user3085 Feb 16 '13 at 17:51
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