I googled iodine allergies and got these links....
http://www.google.com/search?q=iodine+allergy&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a
you can definitely find allergies to radioactive iodine.
also, many are misled by detox symptoms believing it’s an allergy to iodine. It’s not.