Food allergy in infancy.

This article discusses the current understanding of the mechanisms of food hypersensitivity and presents a practical approach to the condition. Skin testing is a useful technique if properly applied and interpreted; however, double-blind placebo-controlled food challenge is the standard for accurate diagnosis against which all other tests should be compared. Treatment still consists of avoidance of the offending food allergens; however, most children lose their reactivity, and thus regular challenges are important.