Food Allergies in Kids

In the past decade, we have seen an increasing number of kids with food allergies at camp.  We take each allergy seriously and make sure that our kitchen staff and counselors are aware of foods the camper needs to avoid.  Some food allergies are life-threatening, but many are reported as being mild.

This blog offers an interesting discussion about diagnosis (and possible mis-diagnosis) of food allergies in children:
http://freerangekids.wordpress.com/2010/02/23/wow-many-kids-possibly-mis-diagnosed-as-allergic/

I am especially curious about the relationship between allergic reactions on skin tests or allergies shown via a blood test, versus reactions to actually ingesting foods.  If anyone has more information about research on this topic, please let me know!