I'm reading up on this cashew allergy... I read that poison ivy and cashews are in the same botanical family. Apparently a severe reaction to poison ivy can bring on a cashew allergy. I find this interesting as my son had his first encounter with poison ivy this summer. Prior to the poison ivy, I know for certain he had cashews with no issues. He still has some scarring on his little leg from the poison ivy. I wonder if these things are related?
I'm currently looking into the ages that Skin Prick Tests are accurate and the safety of having the test on a child who has already had a reaction to his extent. Any readers with links and/or experience my ears are open!