Missy24, sorry to hear that your son had a severe reaction to cashew. Unfortunately you can develop allergies at any time, so in his case he was not allergic before but then became allergic. The article is referring to testing positive to a food but being able to eat it without reaction. Some docs will run a panel to whole list of foods, even if the patient has only reacted to one. This can lead to avoiding more foods than is necessary as there is a high chance of false positives with...
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